Mexico 1758-Mo MM 4 reales
This is one of a series struck 1747-60 during the reign of Ferdinand VI. Assayer MF is listed for 1733-54. The first specimen was lot 7336 in Ponterio sale 153 (Baltimore, March 2010), where it sold for $339.25. The catalog description noted, "MEXICO. 4 Reales, 1758-MM. Toned. NEARLY EXTREMELY FINE." The four reales is the scarcest colonial denomination although all dates are available except for the very rare 1732 and 1733 dates. Harris lists the Ferdinand VI pillar four reales in order of abundance: Mexico, Guatemala, Lima (scarce). Specimens in high grade are very rare.
Mexican numismatists hotly debate which side of the coin constitutes the obverse. Gilboy 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.
Recorded mintage: unknown.
Specification: 13.54 g, .917 fine silver, .399 troy oz ASW.
Catalog reference: Gilboy M-4-32, KM 95.
- 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.
- Harris, Robert P., Pillars & Portraits, San José, CA: Bonanza Press, 1968.
- Harper, David C., ed., North American Coins & Prices: A Guide to U. S., Canadian and Mexican Coins, 17th Ed., Iola, WI: Krause Publications, 2007.
- Ponterio, Richard, and Kent Ponterio, Ponterio sale 153: The 2010 Baltimore Auction, Irvine, CA: Bowers and Merena, 2010.