^Lot 1178 Great Britain, medium-sized copper alloy Admiral Vernon medal, 1739, Vernon and cannon and ship / Po

Great Britain, medium-sized copper alloy Admiral Vernon medal, 1739, Vernon and cannon and ship / Porto Bello, ex-Adams (plate). AC-PBvi9J; Betts-241. 8.04 grams, 32 mm. Choice XF in dark silver-gray color (slightly higher tin content, but apparently not "Possibly silvered, long ago" as stated on Adams' tag), high rims, scarce size and dies. XRF: 41.84% copper, 51.03% zinc, 4.75% lead, 1.32% tin. Pedigreed to the John Adams Collection (with his handwritten tag), acquired in April 1970, plated on page 93 of Medallic Portraits of Admiral Vernon (2010), by Adams and Chao.