Mexico
Carlos & Joanna 4 Reales ND (1542-55), Cayon-3103, KM198, lightly toned XF. Late series. Mexico City mint, assayer, "G". The G assayer is somewhat obscured by the coat of arms. Weight is 13.6 gm. Ex-Heritage Auction Sep.2008, lot 21632.
Estimate: 500-700 USD