It has been consigned by the son of Gerry Cranham who rescued the poster from a lamp-post just after completing his run as an Olympic Torchbearer.
A member of Reading and District Athletics Club at the time, Mr Cranham went on to become a well-known horseracing photographer.
The 2ft 6in x 20in (76 x 51cm) poster is estimated at £1000-1500.
Contact 01258 488838.
