British street artist Banksy is no stranger to being in demand with just one of his pieces fetching up to hundreds of thousands of pounds. But it was a different story for the artist, currently in New York on a residency, when he set up a pop-up booth in Central Park on Saturday.

Writing on his website he said: "Yesterday I set up a stall in the park selling 100% authentic original signed Banksy canvases. For $60 [£38] each."

Accompanying these brief words, the elusive artist also released a two-and-a-half minute video showing an elderly man selling what appears to be imitations of his work from a market stall but are in fact genuine Banksy canvases. While the day's takings were only $420 (£263), the valuation of the small to medium-sized canvases that were sold is estimated to be in the region of £140,000.

It's the latest publicity stunt from Banksy, who likes nothing more than stirring up the art world. His 'live' exhibition entitled Better Out Than In: An Artist Residency on the Streets of New York has him creating a new piece of work every day. So far Banksy has produced more than a dozen art pieces and 'events' in New York, including a cattle truck full of shrieking soft toys that was driven around the city.