Stack's Bowers Galleries, March 2011 Baltimore Auction, Los 8012 WORLD CROWNS & MINORS MEXICO MEXICO. Mexico City. Carlos and Johanna, Early Series. 4 Reales Assayer P (oMo-oPo), ND (1538-40 or 41). KM-17; Nesmith-26; Cal-type-53#74. Light surface porosity. Ex: Pablo Gerber, Spink America, December 1995.BOLD VERY FINE. Estimated value: 1500 USD