Great Britain
Great Britain, copper/silver-alloy Admiral Vernon medal, 1739, Porto Bello, Vernon alone, ex-Adams.AC-PBv22S.18.30 grams; 37mm.AXF with very bright golden-silver color all over (described by Adams as "hard alloy" with specific gravity of 8.383) apart from some tiny dark spots, a few light marks and edge-splits.Pedigreed to the John Adams collection.
Estimate: 150-225 USD