Roman coins collected by a numismatist will be auctioned off on July 3.
Proceeds from the specialist sale will go to the British Museum.
The late Kenneth Edwin Day, from Thames Ditton, was a leading figure in the Kingston Numismatic Society and keen Roman coin collector.
Auctioneer Morton and Eden will divide the coins between two sales and expected the collection to raise about £30,000.
The proceeds of both sales will be added to an acquisition fund set up so the museum can buy coins of significant to Britain and increase the accessibility of the national collection using new digital technology.