Great Britain, silver Admiral Vernon medal, 1739, Vernon and ship and cannon / Porto Bello, rare, ex-Adams. AC-PBvi20GG. 17.23 grams; 39 mm. Beautifully toned with spectacular contrast despite some wear and a few old marks (XF overall). XRF: 96.91% silver, 1.55% copper, 1.07% tin. Pedigreed to the John Adams Collection (with his handwritten tag) and to the Dix Noonan Webb auction of March 2011 (lot 1095).
Estimate: 1000 - 2000 USD