Watch List notes:

Brazil (Rio mint), 640 reis, Pedro I, 1826-R, struck over J-series 600 reis (1750-77) with 640 reis revaluation marks (ca. 1809), rare, NGC UNC details / cleaned. Russo-502; KM-367. 17.00 grams. Bold details with spotty toning and muted luster, traces of undercoin visible near centers on both sides, a rare combination in nice grade despite slight surface granularity from old cleaning. NGC #4721756-001.
($700-1000)