Watch List notes:

Great Britain, copper alloy Admiral Vernon medal, 1739, Vernon / Porto Bello, ex-Adams (plate). AC-PBv42RR; Betts-198. 12.43 grams, 38 mm. UNC or close to it, with much original luster and brassy color resulting from slightly higher tin content. XRF: 40.11% copper, 51.88% zinc, 6.10% lead, 1.25% tin. Pedigreed to the John Adams Collection (with his handwritten tag), plated on page 78 of Medallic Portraits of Admiral Vernon (2010), by Adams and Chao.
($500-1000)