Internet auction site eBay regularly has interesting Pink Floyd items on offer. Currently available (in an auction ending on Monday) is this very interesting, and somewhat amusing, signed copy of the Have A Cigar single, with Roy Harper's moniker on it.

Roy, in the neighbouring studio in Abbey Road recording his own album, famously did the record company exec vocal on the song, in return for a cricket season ticket, which he never received! We like the comment Roy has included along with his autograph - "How about it, Rog?"! The item can be bid on via this link.