Mexico 1666-Mo G 8 reales
This specimen was lot 596 in Sedwick Treasure Auction 38 (Winter Park, FL, November 2025), where it sold for $3,120. The catalog description[1] noted, "MEXICO, Mexico City, cob 8 reales, 1666 G/P, rare. Broad, squarish flan with bold full assayer and clear over-assayer, most of date visible (albeit weakly), most of cross and shield despite extensive flatness, overall Fine with toning in crevices." This specimen is a silver cob eight reales struck at Mexico City 1621-67. Assayer "P" is listed for 1634-65 and assayer "G" for 1666-74. Dated examples are few. The auctioneers and the SCWC attribute this to Philip IV while Cayón files this under Charles II.
Recorded mintage: unknown.
Specification: 27.07 g, 0.931 fine silver, this specimen 26.75 grams.
Catalog reference: Cayón-6579, S-M19a; KM-45; Cal-1375.
- Cayón, Adolfo, Clemente Cayón and Juan Cayón, Las Monedas Españolas, del Tremis al Euro: del 411 a Nuestros Dias, vol. 1, Madrid: Cayón-Jano S.L., 2005.
- Calicó, Xavier, Numismática Española: Catálogo General con Precios de Todas las Monedas Españolas Acuñadas desde Los Reyes Católicos Hasta Felipe VI, 1474 a 2020, Barcelona: Aureo & Calicó, 2019.
- Cuhaj, George S., and Thomas Michael, Standard Catalog of World Coins, 1601-1700, 6th ed., Iola, WI: Krause Publications, 2014.
- Menzel, Sewall, Cobs, Pieces of Eight and Treasure Coins, New York: The American Numismatic Society, 2004.
- [1]Sedwick, Daniel Frank, Augi Garcia, Cori Sedwick Downing, Connor Falk and Sarah Sproles, Auction 38, World, U.S Coins and Paper Money, featuring the Jorge Ugaz Collection of Lima Silver Cob 2 Reales and the Darby Collection of Guatemala Silver Cobs, Winter Park, FL: Daniel Frank Sedwick LLC, 2025.
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