Brazil (Rio mint), 960 reis, Pedro I, 1823-R, SIGNO variety, struck over an Argentina (River Plate Provinces) 8 reales or 8 soles, (1813 or 1815), NGC AU 55. LMB-504; KM-368. Deeply toned, lacking luster but fully detailed, with some of the scarce under-coin details in centers (not noted by NGC), including rays of sunface and arms, just not the date or assayer or denomination.
