Mexico 1751-Mo M real
This date is one of a series struck 1747-1760 for Ferdinand VI. It is considered common, though its mintage is unknown. It is distinguished from later issues (KM 76.2, 1757-60) of pillar one reals by having similar crowns atop the pillars on the date side. Gilboy[1] lists two varieties, one a 5/4 overdate and another 1751/49.
Mexican numismatists hotly debate which side of the coin constitutes the obverse. Gilboy[1] depicts the shield side as the obverse as that side bears the king's name. However, auction catalogs and dealer listings more frequently use the pillars and globes side as the obverse, as that side bears the date.
Specification: 3.38 grams, 0.917 fine silver, .099 troy oz ASW.
Catalog reference: Cayón-10292, Gilboy M-1-24, KM 76.1.
- [1]Gilboy, Frank F., The Milled Columnarios of Central and South America: Spanish American Pillar Coinage, 1732 to 1772, Regina, Saskatchewan: Prairie Wind Publishing, 1999.
- Yonaka, Brad, A Variety Guide to the Fractional Pillar Coinage of Mexico City, 1732-1771, Long Beach, CA: Agorocu Consulting, 2017.
- Cayón, Adolfo, Clemente Cayón and Juan Cayón, Las Monedas Españolas, del Tremis al Euro: del 411 a Nuestros Dias, 2 volumes, Madrid: Cayón-Jano S.L., 2005.
- Calicó, Xavier, Numismática Española: Catálogo General con Precios de Todas las Monedas Españolas Acuñadas desde Los Reyes Católicos Hasta Felipe VI, 1474 a 2020, Barcelona: Aureo & Calicó, 2019.
- Michael, Thomas, Standard Catalog of World Coins, 1701-1800, 7th ed., Iola, WI: Krause Publications, 2016.
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