Mexico 1789-Mo FM 4 reales KM-97.2

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Ponterio sale 169, lot 11088
Mexico 1789 4 reales rev Ponterio 169-11088.jpg
from the Mountain Groan Collection
Mexico 1789 4 reales rev DSLR.jpg
closeup, showing possible overdate

Shown is an 1789MoFM four reales, one of a type struck 1772-89 in Mexico City. King Charles III died early in 1788 but new dies for Charles IV were not ready until 1791; this is a posthumous issue. Assayer FM is recorded for the years 1784-1801. The four reales is the scarcest of the colonial denominations and when found, is usually in low grade. The first specimen was lot 11088 in Ponterio sale 169 (Baltimore, November 2012), where it sold for $223. The catalog description[1] noted, "MEXICO. 4 Reales, 1789/8-FM. Charles III (1759-88). Very scarce. Posthumous issue. Lightly cleaned. VERY FINE."

Recorded mintage: unknown.

Specification: 13.54 g, .896 fine silver, .393 troy oz ASW.

Catalog reference: KM 97.2a.


  • Harper, David C. [Ed.], North American Coins & Prices, 17th Ed., Iola, WI: Krause Publications, 2007.
  • Harris, Robert P., Pillars & Portraits, San José, CA: Bonanza Press, 1968.

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