This is the best summary I could come up with:

A fake cave painting by Banksy is going back on display in the British Museum, 13 years after it was first placed there as a hoax.

Peckham Rock, essentially a lump of concrete showing a supposed prehistoric figure pushing a shopping trolley, was smuggled into the venue in 2005.

Banksy has now loaned the work back to the museum for an exhibition curated by Ian Hislop.

"The work is not very big and we think he [Banksy] just came into the museum like any other visitor and installed it himself - but we just can't be sure," a spokesman said.

"But... there are extraordinary objects that bear witness to someone questioning the authorised version of their times and deciding to make a small though often lasting protest."

Items on show will include an Edwardian coin defaced with the slogan Votes for Women, 18th Century prints mocking George IV as a drunk, and a salt cellar with hidden Catholic imagery made during the English Reformation.

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