Graffiti and street art have traditionally relied on a distinct form of artist identification. Creatives used tags as their names, with repeated, recognizable imagery often substituting for formal attribution. However, problems with this form of identification arose as street art gained formal market recognition and artists began building reputations in the salesroom.

A notable example of this tension is the SAMO tag used by Jean-Michel Basquiat and Al Diaz for their collaborative works, with numerous street artworks appearing across Lower Manhattan in the late 1970s. As Basquiat’s career progressed and his works began selling through galleries and auction houses, anonymity was no longer practical.

Banksy: Lifelong Commitment to Street Art Anonymity

If Basquiat’s anonymity eventually became incompatible with his growing commercial career, Banksy offers a unique example of an artist who has turned anonymity into part of his brand. In 2008, Pest Control Office was established as the official body responsible for authenticating Banksy’s commercial artworks, helping the artist maintain his anonymity while providing collectors with a system for verifying eligible works.

Pest Control’s position on Banksy’s art is particularly distinctive. The office issues Certificates of Authentication for eligible commercial works, including prints, paintings, and sculptures, but street artworks created in public spaces or subsequently removed from them may be considered ineligible for authentication. The policy reflects the idea that works created specifically for the street should remain connected to their original public context rather than become private property.

In some cases, this position creates tension with the art market. For instance, in 2017, a cardboard protest placard known as Bomb Hugger, created by Banksy for a 2003 anti-Iraq War demonstration, was sold at auction in Newmarket for £10,000. Pest Control reportedly declined to issue a certificate because the work was considered street art. Despite the lack of authentication, a buyer still acquired the piece, demonstrating the market’s willingness to value Banksy’s work beyond conventional certification.

Anonymity: Resistance or Durable Brand Architecture?

The fact that street art often challenges traditional ideas of ownership does not stop collectors from pursuing it. Banksy’s Girl with Balloon, partially shredded moments after selling for more than £1 million, is a notorious example of how collectors may value the sensation, originality, and unpredictability associated with the artist.

Yet Banksy remains an exceptional case. His anonymity has become inseparable from his artistic identity and market value. For many other street artists, commercial recognition follows a more conventional path, often requiring public attribution and a recognizable name. In this sense, Banksy demonstrates how anonymity can evolve from a limitation into one of the most powerful elements of an artist’s brand.