A London neighborhood wants its Banksy back.

A stencil by the graffiti artist of a young boy sewing Union Jack bunting appeared on the side of a bargain store last May.

Interpreted as an ironic comment on Queen Elizabeth II's Diamond Jubilee, it drew art-lovers to the gritty Turnpike Lane area.

Last week it vanished _ only to reappear on the website of a Miami auction house. It is due to be sold Saturday with an estimated price of between $500,000 and $700,000.

London lawmaker Lynne Featherstone says she has asked the building's owner for an explanation but has yet to receive a reply.

Local authorities have asked Britain's Arts Council to help get the artwork back.

Fine Art Auctions Miami could not immediately be reached for comment Wednesday.