Watch List notes:

Great Britain, copper alloy Admiral Vernon medal, Vernon and Brown / Porto Bello, 1739, ex-Adams. AC-PBvb5I. 38 mm, 14.90 grams. Lustrous AU+, light olive-brown color, choice strike with sharp full details, tall rims, small pit between N and D in AND on obverse. XRF: 49.41% copper, 49.00% zinc, 1.34% lead. Pedigreed to the John Adams Collection (with his handwritten tag) and to the Stack's Bowers auction of November 2012 (lot 19).
($500-750)