Watch List notes:

Great Britain, copper-zinc Admiral Vernon medal, 1739, Porto Bello, ex-Adams.AC-PBvi20GG.12.53 grams, 36 mm.Medium brown with a hint of luster, overall AU-. Tested (XRF) at 55.07% copper and 42.37% zinc (full results on small printout included).Pedigreed to the John Adams collection and to the Stack's Bowers auction of September 2011, with original lot-tag 34.
($150-225)