A leather jug made from Oliver Cromwell s war horse Blackjack is expected to fetch £6,000 as it emerges for sale 368 years later.
The huge tankard was one of a dozen made from the hide of Cromwell s dead horse and it would have been used to carry water or ale.
A few years later the 2ft tall jug was deposited at the family bank C Hoare and Co in London and left there.
It fell into the ownership of the Hoare family and has been passed down from generation to generation.
The family has now decided to sell it at auction with Dukes Auctioneers of Dorchester, Dorset, and it has been given a pre-sale estimate of £6,000.