Mexico 1983 20 centavos KM-491

from the Mountain Groan Collection

This type was struck 1983-84 and superseded a copper-nickel twenty centavos with the bust of Madero (KM 442). The stress of inflation in the 1980's as Mexico squandered her oil bonanza caused many coin types to come and go. This one honors the Olmecs, an Indian culture which preceded the Mayas and the Aztecs. It is the last of the denomination.

Recorded mintage: 260,000,000 plus a few proofs.

Specification: 3.0 g, bronze, 20 mm diameter.

Catalog reference: KM 491.

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.
• 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, 1901-2000, 47th ed., Iola, WI: Krause Publications, 2019.

Link to:

• 1983 20 centavos, Madero
• 1983 50 centavos, Cuauhtémoc
• 1983 50 centavos, Palenque culture
• 1983 peso, copper-nickel
• 1983 5 pesos, Quetzalcoatl
• 1983 10 pesos, Hidalgo
• 1983 20 pesos, Maya dancer
• 1983 50 pesos, Coyolxauhqui
• 1983 libertad
• 1984 20 centavos, Olmec culture
• Coins and currency dated 1983
• return to Mexican coinage of the modern era, since 1905