Watch List notes:

Great Britain, copper-zinc Admiral Vernon medal, 1739, Porto Bello, ex-Adams (Plate).AC-PBv26V.15.91 grams, 38 mm. AU- with mostly olive-colored fields (dark elsewhere), slight surface oxidation, specific gravity measured at 8.2. Tested (XRF) at 49.42% zinc and 48.05% copper (full results on small printout included).Pedigreed to the John Adams collection (plated on p. 66 of his book).
($200-300)