A mail bag signed by ten members of the gang responsible for the 1963 Great Train Robbery is set to be auctioned 63 years after the heist. The bag, a cream drawstring style similar to those used by the prisoners during their incarceration, carries the autographs of several key figures involved in one of Britain’s most notorious crimes.

The Great Train Robbery involved an armed gang intercepting the Royal Mail Travelling Post Office, which was en route from Glasgow to London Euston. The gang stopped the train at a bridge in Ledburn, Buckinghamshire, by manipulating the railway signals—covering a green light with a glove and using a battery to trigger a red signal. They then cut the cables of a lineside phone to delay any alarm.

After forcing the train to stop, the gang attacked one of the two drivers, Jack Mills, who was reportedly brutalized during the raid, and boarded the train. The gang quickly formed a human chain to unload 120 mail sacks containing cash, worth the equivalent of nearly £50 million today, into waiting lorries.

The signatures on the bag include those of Bruce Reynolds, the gang’s ringleader, Ronnie Biggs, Buster Edwards, Charlie Wilson, Gordon Goody, Roger Cordrey, Tommy Wisbey, Bob Welch, James "Jimmy" Hussey, and getaway driver Roy “The Weasel” James. Many of these men were later apprehended and served prison sentences for their roles in the robbery.

Along with the mail bag, the auction lot includes a color photograph depicting the train involved in the heist. This memorabilia highlights the continued public fascination with the event, which remains one of the most infamous criminal acts in British history.