Watch List notes:

Great Britain, gilt copper-zinc Admiral Vernon medal, 1739, Porto Bello, ex-Adams.AC-PBvi6G.13.18 grams, 37 mm. Bright and lustrous UNC with choice, complete gold coloring on surfaces (non-auric), just the highest points slightly brown, one tiny rim-bump on reverse. Tested (XRF) at 51.40% copper and 37.45% zinc along with 7.33% phosphorus from the gilding (full results on small printout included).Pedigreed to the John Adams collection.
($350-500)