[JohnnyP]

The Lend-Lease pistols that came back to the U.S. had remained in virtually unissued condition, and don't ever recall seeing one with the British broad-arrow property mark. The pistols were not proofed until released by the British government for sale, the first being sold in 1952.

The proofs shown on the above Colt are post 1954 proofs. The slide and receiver should have the Crown/BNP proofs.

Value depends on maker and condition. Some were still new in the box when returned.

 

[JohnnyP]

Is it possible for a US GI to have carried and used this Canadian lend lease?

I can't imagine any circumstance where a U.S. GI could have carried the pistol. 1515 Colts were Lend-Leased to Canada where they had the Canadian broad-arrow C property mark applied, and following WWII some were sold to a British arms merchant, returned to England, proofed, and then some were some brought back by U.S. dealers.

 

[JohnnyP]

Do you know what these 1515 were originally used for? Who got these pistols?

I do not know, but Clive Law has a book on Canadian military pistols which may give some insight into their use.