^Lot 1564 Great Britain, copper alloy Admiral Vernon medal, 1739, Vernon and Brown / Porto Bello, ex-Adams (Pl

Great Britain, copper alloy Admiral Vernon medal, 1739, Vernon and Brown / Porto Bello, ex-Adams (Plate). AC-PBvb12U. 12.08 grams; 38 mm. Dark AXF with just a few lighter spots, weakly dentillated rims, scarce. XRF: 48.23 % zinc, 48.14% copper, 2.85% lead Pedigreed to the John Adams Collection (with his handwritten tag), plated on page 125 of Medallic Portraits of Admiral Vernon (2010), by Adams and Chao, and to the Stack's auction of January 2007, with original lot-tag 6823.