Watch List notes:

Great Britain, copper-zinc Admiral Vernon medal, 1739, Porto Bello, ex-Adams.AC-PBvi5E.15.19 grams, 40 mm.Lustrous UNC with much original brass color, very choice and attractive. Tested (XRF) at 48.69% copper and 47.91% zinc (full results on small printout included).Pedigreed to the John Adams collection.
($300-450)