Mexico 1981-Mo 20 centavos

Stack's Bowers May 2023 Collector's Choice sale, lot 70677

from the Mountain Groan Collection

The first specimen was lot 70677 in Stack's Bowers Collector's Choice sale (Costa Mesa, CA, May 2023), where it sold for $192. The catalog description^[1] noted, "MEXICO. 20 Centavos, 1981/1982-Mo. Mexico City Mint. PCGS MS-64. Overdate variety. A very interesting and SCARCE error featuring an overdate of a later date, this minor presents a subtle tone and crisp overall details." This type was struck 1974-83. This overdate likely came about when it became clear that no 1982 20 centavos would be made and dies prepared in anticipation of the new year would not be usable. It is the only issue of this type that is scarce.

Recorded mintage: 248,500,000 (open 8) plus 106,205,000 (closed 8).

Specification: 3 g, copper-nickel, 20 mm diameter.

Catalog reference: KM 442.

Source:

• Amaya Guerra, Carlos Abel, Epitome Ilustrado de la Moneda Mexican Moderna, 1905 a 2015, Monterrey, Mexico, 2015.
• Bailey, Don and Lois, Whitman Encyclopedia of Mexican Money, Volume 1, An Illustrated History of Mexican Coins and Currency, Atlanta: Whitman Publishing, 2014.
• Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1901-2000, 47th ed., Iola, WI: Krause Publications, 2019.
• Buttrey, T. V., and Clyde Hubbard, A Guide Book of Mexican Coins, 1822 to date, 6th ed., Iola, WI: Krause Publications, 1992.
• ^[1]Orsini, Matt, Kyle Ponterio and Jeremy Bostwick, May 2023 World Collectors Choice Online Auction, Featuring the Richard Elliott Collection of Hooknecks, Costa Mesa, CA: Stack's Bowers Galleries, Inc., 2023.

Link to:

• 1975 20 centavos
• 1981 50 centavos, Cuauhtémoc
• 1981 peso, copper-nickel
• 1981 5 pesos, Quetzalcoatl
• 1981 10 pesos, Hidalgo
• 1981 20 pesos
• 1981 ¼ gold onza
• 1981 ½ gold onza
• 1981 gold onza
• 1982 20 centavos, Madero
• Coins and currency dated 1981
• return to Mexican coinage of the modern era, since 1905