Watch List notes:

Great Britain, copper-zinc Admiral Vernon medal, 1739, Porto Bello, ex-Adams.AC-PBvi11P.16.21 grams, 38 mm.UNC or close to it, with mostly brass color and luster, scarce. Tested (XRF) at 49.74% copper and 49.01% zinc (full results on small printout included).Pedigreed to the John Adams collection.
($250-375)