Ooops.

Not art-lovers then:

Before

After

Banksy work painted over in error

A graffiti removal team painted over the mural
A large wall mural by “guerrilla artist” Banksy has been mistakenly painted over by a council’s graffiti-removal contractors.

The valuable 25ft-long artwork, on the side of garages in Bristol, was covered with a coat of thick black paint.

Bristol City Council said it wanted an investigation into the blunder. The council has ordered all Banksy works in the city to be preserved.

Someone has since sprayed the words “Wot no Banksy?” on top of the ex-work.

‘Wrong graffiti’

The mural, one of Banksy’s early works, had featured a collection of blue shapes with the artist’s trademark tag.

[…]

In February a picture of pensioners bowling with bombs by Banksy sold in London for £102,000, breaking a record for his work.