Mexico 1851-Pi MC 1/2 real

Stack's Bowers June 2026 World Premier Collectors Choice Auction, lot 72226

This specimen was lot 72226 in Stack's Bowers June 2026 World Premier Collectors Choice Auction (Costa Mesa, CA, June 2026), where it sold for $414.80. The catalog description^[1] noted, "MEXICO. 1/2 Real, 1851-Pi MC. San Luis Potosi Mint. NGC MS-64. Second finest of two examples graded by NGC. Well struck with some obverse adjustment marks. From the Kirk Menczer Collection of Republican Reales Minors." Of the fourteen mints of the Republic of Mexico, only Oaxaca and Real de Catorce did not strike this type. The San Luis Potosi mint struck half reales 1831, 1841-63 and most are scarcer than the SCWC indicates. Assayer MC (Mariano Catano) served 1849-59.

Recorded mintage: unknown.

Specification: 1.69 g, 0.903 fine silver, .049 troy oz ASW.

Catalog reference: KM-370.10.

Source:

• Busse, Dave, A Minor Challenge: A Study of Mexican Republic Silver ¼, ½, 1, 2 and 4 Reales Die Styles,, Harlingen, TX: 2018.
• Buttrey, T. V., and Clyde Hubbard, A Guide Book of Mexican Coins, 1822 to date, 6th ed., Iola, WI: Krause Publications, 1992.
• Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1801-1900, 9th ed., Iola, WI: Krause Publications, 2019.
• Utberg, Neil S., The Coins of Mexico, 1536-1963, San Antonio, TX, 1963.
• ^[1]Orsini, Matt, Kyle Ponterio and Jeremy Bostwick, June 2026 World Premier Collectors Choice Auction - Selections from the L.E. Bruun Collection, the Richard Margolis Collection and the Kirk Menczer Collection of Republican Reales Minors, Costa Mesa, CA: Stack's Bowers Galleries, Inc., 2026.

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• 1850-P^I ½ real
• Durango 1851 1/8 real
• 1851-G^O ¼ real
• 1851-SLP^I ¼ real
• 1851-D^O ½ real
• 1851-G^A ½ real
• 1851-GC ½ real
• 1851-G^O ½ real
• 1851-M^O ½ real
• 1851-Z ½ real
• 1851-C real
• 1851-G^A real
• 1851-GC real
• 1851-G^O real
• 1851-P^I real
• 1851-Z^S real
• 1851-C 2 reales
• 1851-D^O 2 reales
• 1851-G^A 2 reales
• 1851-GC 2 reales
• 1851-G^O 2 reales
• 1851-M^O 2 reales
• 1851-Z^S 2 reales
• 1851-G^O 4 reales
• 1851-P^I 4 reales
• 1851-Z^S 4 reales
• 1851-C 8 reales
• 1851-C^A 8 reales
• 1851-D^O 8 reales
• 1851-G^A 8 reales
• 1851-GC 8 reales
• 1851-G^O 8 reales
• 1851-M^O 8 reales
• 1851-P^I 8 reales
• 1851-Z^S 8 reales
• 1851-D^O ½ escudo
• 1851-GC ½ escudo
• 1851-G^O ½ escudo
• 1851-M^O ½ escudo
• 1851-D^O escudo
• 1851-G^A escudo
• "1851-GC" escudo (counterfeit)
• 1851-G^O escudo
• 1851-G^O 4 escudos
• 1851-C 8 escudos
• 1851-C^A 8 escudos
• 1851-D^O 8 escudos
• 1851-G^A 8 escudos
• 1851-GC 8 escudos
• 1851-G^O 8 escudos
• 1851-M^O 8 escudos
• 1852-D^O ½ real
• 1852-G^A ½ real
• 1852-G^O½ real
• 1852-M^O ½ real
• 1852-P^I ½ real
• Coins and currency dated 1851
• return to Mexican imperial and republican coinage, 1822-1905