# Buying Banksy: Auction and Art Market Jargon, Editions and Pest Control

> Source: LLB Auction (https://www.llb-auction.com/insights/ways-of-seeing/the-contemporary-canon/banksy-at-auction-editions-authentication-and-the-pest-control-question)
> Author: LLB Auction
> Published: August 3, 2026

---

Banksy's market runs on two documents and one vocabulary. The documents are a Pest Control Office certificate and a condition report. The vocabulary is the auction and art market jargon that decides, term by term, whether a work can be catalogued, insured and resold. A signed screenprint carrying a certificate traded at a median of roughly 38,100 US dollars in 2025, according to the Banksy Explained annual print report, against roughly 16,505 US dollars for an unsigned impression of the same image. A wall fragment chiselled from a building sits outside that certified market altogether.

> **Key points:**
>
> - **Pest Control Office**, the artist's handling service, was established in 2008 and is the only body that authenticates Banksy works. MyArtBroker's verification guide reports processing fees of 100 pounds plus VAT for a screenprint and 150 pounds plus VAT for a unique work, with no charge when a piece is judged fake.
> - Pest Control declines street pieces as published policy, on the stated ground that Banksy prefers street work to remain in situ.
> - Banksy Explained counted 817 print lots offered at auction between 2023 and 2025, of which 626 sold, a sell-through of roughly 77 percent.
> - Signed impressions carried a 2025 median of about 38,100 US dollars against 16,505 US dollars unsigned, a multiple of roughly 2.3.
> - *Love is in the Bin* sold at Sotheby's on 14 October 2021 for 18,582,000 pounds with fees, against a 6,000,000 pound high estimate, accompanied by a Pest Control certificate.

## The auction and art market jargon that governs a Banksy sale

Saleroom vocabulary is a financial instrument before it is a style. Each term below fixes an obligation, a cost or a limit on what the buyer can later do with the object. MyArtBroker's glossary of auction and art market jargon defines a **lot** as an individual object, artwork, or a group of objects, offered for sale via auction as a single unit.

| Term | Definition | What it decides for a Banksy |
| :- | :- | :- |
| Lot | A single object or grouped set offered as one unit | Whether certificate, frame and print sell together |
| Reserve | A confidential minimum price agreed between seller and house | Whether the print sells if bidding stalls |
| Hammer price | The price at which the gavel falls, excluding premium and VAT | The figure quoted in every price database |
| Buyer's premium | A percentage of the hammer price paid by the buyer | The real cost of acquisition |
| Bought in | A lot that failed to meet its reserve | A public record of failed demand |
| Provenance | The documented chain of ownership, certificates and conservation records | Resale confidence |
| Edition | A limited edition has a fixed size; an open edition has none | Whether scarcity is verifiable |
| Condition report | A written description of an item's physical state | The disclosure that survives disputes |

### What auction and art market jargon costs you in practice

The distance between hammer price and settled invoice is the first surprise for a new bidder. A print knocked down at 100,000 pounds costs 120,000 pounds once a 20 percent **buyer's premium** is applied, and the consignor of that same lot receives 90,000 pounds after a 10 percent seller's commission. Thirty thousand pounds, a quarter of the buyer's outlay, never reaches the seller. Price databases record the hammer figure only, so a remembered purchase price compared against a published result understates the gap by that margin. The artnet Price Database covers results back to 1985 across more than 1,800 auction houses and 385,000 artists, while MutualArt carries realised prices for over 962,000 artists drawn from more than 54,000 institutions. Both record public outcomes only, which matters here because MyArtBroker observes that most Banksy's actually get sold on the private secondary market.

## The authorised print market: signed, unsigned and artist's proofs

The authorised Banksy print market divides into three tiers, and the auction and art market jargon separating them maps directly onto price. A **screenprint** is an image pulled through a stencilled mesh screen, the technique behind almost every Banksy edition. A **signed impression** carries the artist's hand-applied signature and belongs to the smaller run of a given image. An **unsigned impression** comes from the larger run. An **artist's proof**, abbreviated AP, is an impression held outside the main numbered edition.

| Tier | Position in the edition | Pest Control eligibility | 2025 median at auction |
| :- | :- | :- | :- |
| Signed impression | Smaller numbered run, signed by hand | Yes, on submission | About 38,100 US dollars |
| Unsigned impression | Larger numbered run of the same image | Yes, on submission | About 16,505 US dollars |
| Artist's proof | Held back from the numbered edition | Yes, on submission | Varies with title and condition |
| Removed street piece | Outside the edition system | Refused | No certified comparables |

Depth of demand is uneven across the catalogue. Banksy Explained identifies *Girl with Balloon*, *Bomb Love*, *Toxic Mary*, *Pulp Fiction* and *Napalm* among the most liquid titles between 2023 and 2025. Total print volume reached roughly 7.32 million US dollars in 2025, at an average of about 35,374 US dollars and a median of 21,250 US dollars, a decline of between 35 and 37.5 percent against 2023. The same reading of edition structure applies across the canon: our study of [Andy Warhol prints, editions, stamps and condition](/insights/ways-of-seeing/the-contemporary-canon/andy-warhol-prints-reading-editions-stamps-and-condition) traces the equivalent tiers in a market with fifty years of catalogue scholarship behind it.

## How Pest Control decides what is sellable

[Pest Control Office](https://pestcontroloffice.com/) has been the artist's handling service since 2008 and is the only route to a Banksy certificate of authenticity. Submissions run through a form on its website, supported by high-resolution images, dimensions and any documentation already attached to the work. Approaches made directly to staff are not accepted, and turnaround is slow because submission volume is high.

The certificate itself is a physical security device. Pest Control tears a **Di-faced Tenner**, the spoof 10 pound note Banksy printed with Princess Diana's face, and staples one half to the certificate while retaining the matching half on file. A handwritten identifier on the note links the two halves. Certificates issued after 2020 add a rat illustration inside a coffee-cup stain and a unique serial number. The office also runs a check before you buy service for prospective purchasers.

The governing point of auction and art market jargon here is narrow and consequential: certification is tradability. MyArtBroker's valuation guide states the rule in one line, that the golden rule of Banksy is not to buy any Banksy print that doesn't have a certificate, particularly if they're asking for money that would warrant a certificate. Authenticity risk sits with the buyer in every jurisdiction where these works trade, and no auction house assumes it on the buyer's behalf. The certificate is the instrument that carries confidence, and it travels with the work.

Single-artist authentication bodies are fragile institutions, which is why Pest Control's continued operation matters. The Andy Warhol Art Authentication Board was dissolved in 2012 after seventeen years, by which point, as Artforum reported, the foundation's legal bills from a single suit brought by the collector Joe Simon-Whelan had reached approximately 7 million US dollars. The Andy Warhol Foundation for the Visual Arts kept the scholarship and abandoned the adjudication. Joel Wachs, president of the foundation, framed the distinction: "The catalogue raisonné serves a non-market purpose: Andy's legacy and Warhol scholarship." Six volumes of that **catalogue raisonné**, the scholarly inventory of an artist's authenticated output, cover 1961 to 1980.

![A London brick wall with a rectangular void where a stencilled section has been cut away and removed](https://renderings.laboetie.io/media/2H9w6dJATwBW9oX6P7jFZ/w2560)

## Why street pieces are a minefield

A Banksy on a wall is the most recognisable form of the artist's work and the least sellable, and no fluency in auction and art market jargon changes that. Pest Control's published position is that it does not authenticate street pieces because Banksy prefers street work to remain in situ and building owners tend to become irate when their doors go missing because of a stencil. Murals, public works, unauthorised merchandise and mass-produced gift prints all fall outside the service.

The *Slave Labour* episode set the template. The stencil appeared on a north London shop wall in May 2012, was chiselled off, and was consigned to Fine Art Auctions Miami for a February 2013 sale. Public protest forced its withdrawal, as NPR reported, and the work later changed hands at a private sale run by The Sincura Group at the London Film Museum for approximately 1.1 million US dollars. Removal of street work is rarely unlawful in itself, and it reliably produces an object with contested title, no certificate and a thin pool of buyers.

Compare that with a unique work the artist chose to release. *Love is in the Bin*, the canvas whose lower half was shredded in the frame moments after the 2018 hammer fell at 1 million pounds, returned to [Sotheby's](https://www.sothebys.com/buy/22a80d8e-43b4-429e-9723-c6bd81ac60a1/lots/86b4f4ba-85e9-489b-bdba-73c2b38b9488) on 14 October 2021. Catalogued as spray paint and acrylic on canvas mounted on board, measuring 142 by 78 by 18 centimetres, it carried a Pest Control certificate and a decommissioned shredding mechanism retained as part of the work. It sold for 18,582,000 pounds with fees against a 6,000,000 pound high estimate, a record for the artist reported by The Art Newspaper.

## Condition and edition fraction: where the value actually sits

Condition is the part of auction and art market jargon that new buyers most often skip, because Banksy editions are recent enough to seem settled. Works on paper from the early 2000s have now spent two decades in domestic framing, and MyArtBroker's valuation guide identifies four recurring faults: **dry mounting**, the permanent adhesion of the sheet to a backing board; **mount burn**, discoloration transferred into the paper by a non-archival window mount; light exposure producing fading and uneven paper tone; and **cockling**, a waviness that is sometimes acceptable when the work is correctly hinged. Dry mounting is the most punitive, because it cannot be reversed.

Edition fraction, the numbering written as 34 over 150, carries less weight here than new buyers assume, because a screenprint run is not degraded by sequence in the way an etching plate is. Banksy also issued artist's proofs in volumes far above the customary ten percent of an edition, so AP status alone establishes nothing without the title, the colourway and the condition behind it. This is one place where auction and art market jargon flatters an object more than the market does.

Seven checks separate a defensible purchase from a hopeful one:

1. **Certificate.** Confirm the Pest Control certificate exists, with serial number and Di-faced Tenner half present.
2. **Catalogue language.** Read whether the house says "by" the artist or hedges with "attributed to"; the wording is the extent of its assertion.
3. **Condition report.** Obtain the written report before bidding and treat it as the ceiling of the work's physical state.
4. **Mounting.** Establish whether the sheet is hinged or dry mounted, since the second is irreversible.
5. **Comparables.** Pull the last five results for the same title and tier, at hammer rather than at invoice.
6. **Total cost.** Add the buyer's premium and any VAT to your ceiling before the sale opens.
7. **Provenance chain.** Check the ownership history and prior sale records against the certificate.

The same arithmetic of edition size against depth of demand shapes [Damien Hirst's multiples, spots, spins and the volume question](/insights/ways-of-seeing/the-contemporary-canon/damien-hirst-s-multiples-spots-spins-and-the-volume-question) and the market for [Yayoi Kusama, pumpkins, infinity and depth of demand](/insights/ways-of-seeing/the-contemporary-canon/yayoi-kusama-s-market-pumpkins-infinity-and-depth-of-demand).

## One lot end to end: auction and art market jargon in practice

Glossaries define terms in isolation. Following one representative lot through a sale shows how auction and art market jargon interlocks. Take a signed impression of a core title, consigned to a timed online sale with a confidential reserve of 85,000 pounds against an estimate of 90,000 to 120,000 pounds.

The consignor and the house agree the **reserve** in advance and it is never published. If bidding stops at 80,000 pounds, the lot is **bought in**, recorded publicly as unsold, and that record follows the impression into its next outing. If bidding reaches 100,000 pounds, the gavel falls and 100,000 pounds becomes the **hammer price** entered into the artnet and MutualArt databases. The buyer pays a 20 percent buyer's premium and settles at 120,000 pounds; the consignor receives 90,000 pounds after a 10 percent seller's commission. The auction and art market jargon has allocated 30,000 pounds between the two parties, 25 percent of what the buyer paid.

One structural distinction sits underneath all of it. A live auction runs in real time against bidders in the room or on the telephone, with the auctioneer controlling pace. A timed online auction runs for a fixed window, at LLB Auction between seven and fourteen days, with no auctioneer and no live floor. Reserve, hammer, premium and condition report work identically in both; only the clock changes.

## FAQ: Banksy editions, Pest Control and auction and art market jargon

### Does a Banksy print need a Pest Control certificate to sell at auction?

In practice, yes. Pest Control Office is the only body that authenticates Banksy works, and salerooms catalogue prints on the strength of that certificate. MyArtBroker puts the rule plainly in its valuation guide: the golden rule of Banksy is not to buy any print without a certificate. An uncertified impression can still be sold, but it is catalogued in weaker language and it prices accordingly.

### What is the difference between a signed and an unsigned Banksy print?

A signed impression carries the artist's hand-applied signature and belongs to the smaller run of a given image; an unsigned impression comes from the larger run. The gap is measurable. Banksy Explained recorded a 2025 median of roughly 38,100 US dollars for signed impressions against 16,505 US dollars for unsigned ones, a multiple of about 2.3 on identical imagery.

### Can a Banksy taken from a wall be authenticated?

No. Pest Control Office declines street pieces as published policy, on the ground that Banksy prefers street work to remain in situ and that building owners object when a stencilled door disappears. Murals, public works, unauthorised merchandise and mass-produced gift prints all fall outside the service, which leaves a removed wall fragment permanently uncertified and difficult to resell.

### How much does Pest Control authentication cost?

MyArtBroker's verification guide reports processing fees of 100 pounds plus VAT for a screenprint and 150 pounds plus VAT for a unique work, with no charge when a piece is judged fake. Submission runs through the form on the Pest Control website, with high-resolution images, dimensions and existing documentation. Direct approaches to staff are not accepted, and processing is slow because submission volume is high.

### Which condition problems most reduce the value of a Banksy print?

Four faults recur across the market: dry mounting, where the sheet has been glued to a backing board; mount burn from non-archival framing; light fading with uneven paper tone; and cockling. MyArtBroker identifies dry mounting as the most damaging, because the treatment is effectively irreversible. Every competent condition report discloses all four, which is why buyers read the report before bidding.

## How LLB Auction approaches the Banksy print market

LLB Auction is an online contemporary art house selling through timed sales of seven to fourteen days on its own platform and on Artsy, with four sales committed across 2026. Works handled include Andy Warhol, Damien Hirst, Yayoi Kusama, Keith Haring and Banksy, with typical lots between 800 and 50,000 euros.

**Rejection at intake.** Roughly 40 percent of submitted works are declined before they reach a sale. The threshold is applied to the individual object, on documentation and condition, and the house walks away from inventory that does not clear it.

**Documentation before description.** Every lot carries a three-page professional condition report and per-lot due diligence covering certificate verification, ownership history and conservation records. The report is the governing description of the object. Authenticity risk in a secondary-market purchase rests with the buyer, which is why the evidence is published in full.

**Fees disclosed upfront.** A 20 percent buyer's premium and a 10 percent seller's commission are stated before bidding opens, with no additional charges at checkout. At the Contemporary Art Spring 2026 sale of 26 May 2026, 25 lots were offered and 23 sold for roughly 39,480 euros in gross hammer, with every bidder knowing the full cost of a lot in advance.

Collectors reading the wider field will find the same method in [the names that move the market, a collector's map of the contemporary canon](/insights/ways-of-seeing/the-contemporary-canon). The current auctions at llb-auction.com are where the auction and art market jargon in this article meets live catalogue entries, condition reports and disclosed fees.

## Conclusion

Banksy is an unusually documented artist for one who has never shown his face. A certificate from Pest Control Office, a written condition report and a legible provenance chain do more to set a price than the image itself, which is why an unsigned impression of *Girl with Balloon* clears the market at a fraction of its signed sibling. The 77 percent sell-through recorded across 817 print lots between 2023 and 2025 belongs to the certified market, and the auction and art market jargon describing it applies nowhere else.

For a collector entering the artist for the first time, the authorised print remains the defensible starting point: certified, comparable against two decades of public results, and bounded by a condition report the buyer can read before bidding. Learn the auction and art market jargon first and read the paperwork second. Fluency in auction and art market jargon is what separates a defensible purchase from an expensive story.

## Sources

**Further reading**

- [The names that move the market, a collector's map of the contemporary canon](/insights/ways-of-seeing/the-contemporary-canon)
- [Andy Warhol prints: reading editions, stamps and condition](/insights/ways-of-seeing/the-contemporary-canon/andy-warhol-prints-reading-editions-stamps-and-condition)
- [Damien Hirst's multiples: spots, spins and the volume question](/insights/ways-of-seeing/the-contemporary-canon/damien-hirst-s-multiples-spots-spins-and-the-volume-question)
- [Yayoi Kusama's market: pumpkins, infinity and depth of demand](/insights/ways-of-seeing/the-contemporary-canon/yayoi-kusama-s-market-pumpkins-infinity-and-depth-of-demand)

**External sources**

- [Pest Control Office](https://pestcontroloffice.com/) : Pest Control Office, 2026
- [Verifying Banksy Prints with Pest Control](https://www.myartbroker.com/artist-banksy/guides/how-to-verify-banksy-prints-with-pest-control) : MyArtBroker, 2025
- [Banksy Print Valuation Guide](https://www.myartbroker.com/artist-banksy/guides/banksy-print-valuation-guide) : MyArtBroker, 2026
- [A Guide To Auction And Art Market Jargon](https://www.myartbroker.com/collecting/guides/a-guide-to-auction-and-art-market-jargon) : MyArtBroker, 2025
- [Banksy Prints 2025 Annual Report](https://banksyexplained.com/prints-2025-auction-results/) : Banksy Explained, 2026
- [Love is in the Bin, lot notes](https://www.sothebys.com/buy/22a80d8e-43b4-429e-9723-c6bd81ac60a1/lots/86b4f4ba-85e9-489b-bdba-73c2b38b9488) : Sotheby's, 2021
- [Banksy world record for the shredded work](https://www.theartnewspaper.com/2021/10/14/banksys-shredded-love-is-in-the-bin-sells-for-pound185m) : The Art Newspaper, 2021
- [Auction halted of Banksy mural removed in London](https://www.npr.org/sections/thetwo-way/2013/02/24/172815000/auction-halted-of-banksy-mural-removed-in-london) : NPR, 2013
- [artnet Price Database](https://www.artnet.com/price-database/) : artnet, 2026
- [Art Auction Price Database](https://www.mutualart.com/price-database) : MutualArt, 2026
- [The Andy Warhol Catalogue Raisonné](https://warholfoundation.org/legacy/catalogue-raisonne/) : Andy Warhol Foundation, 2025
- [Warhol Authentication Board to Shut Down](https://www.artforum.com/news/warhol-authentication-board-to-shut-down-29275/) : Artforum, 2011