Bolivia 1666-P E 8 reales
Royals are known of this type from the Potosi mint but all are rare. The regular cob issues are not nearly as nice. The years 1649-52 were a period of reform at the Potosi mint; it was found that the previous mintmasters in office 1625-48 had been debasing the cobs, a crime for which one official paid with his life. This specimen was lot 13029 in Ponterio sale 177 (Chicago, August 2013), where it sold for $6,580. The catalog description noted, "BOLIVIA. 8 Reales Royal, 1666-PE. Philip IV (posthumous issue) (1621-65). Final date for Philip IV. Royal type. Pierced as usual, gilt. Struck on a round planchet with well centered dies. Very nice strike."
Recorded mintage: unknown.
Specification: 27.07 g, .931 fine silver, .810 troy oz ASW.
Catalog reference: Cayón-6578, KM-R21; Cal-type-106-430; LAZ-177(R3).
- Cayón, Adolfo, Clemente Cayón and Juan Cayón, Las Monedas Españolas, del Tremis al Euro: del 411 a Nuestros Dias, 2 volumes, 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 Juan Carlos I, 1474 a 2001, Barcelona: Aureo & Calicó, 2008.
- 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.
- Ponterio, Richard, Ponterio sale 177: The August 2013 Chicago ANA Auction, World Coins, Irvine, CA: Stack's Bowers, LLC, 2013.