Watch List notes:

Mexico. 1 Real, ND (1536-38) R. KM-0007; Nes-3a. Charles and Johanna, 1536-1542). Early Series. 3.13g. Mexico City mint. Francisco del Rincon as 'R' assayer. Scarce issue. PCGS graded Extremely Fine Detail (Tooled). Estimated Value $1,000 - UP
Ex The David Karpeles Collection.