Roger Waters, David Gilmour and Nick Mason have all signed a one-off guitar, which is being auctioned in aid of homelessness charity Crisis.

The Fender American Standard Stratocaster guitar has been especially hand painted by Ian Emes, creator of the animated clocks on the 'Time' screen film, and Ian has recreated the clocks on the body of the guitar. With the guitar signed by the band and Ian, this truly unique instrument is sure to raise some decent funds for this very deserving cause.

Click here to be taken directly to the guitar on CharityBuzz.com; the auction opened today and closes on Thursday 14th July at 2:45PM Eastern Time, (7:45PM GMT). If you wish to make a separate donation to Crisis, their Web site is here.

UPDATE: The guitar sold for a very respectable $26,000/£16,025.