Bolivia 1731-P M 8 reales
This specimen was lot 22388 in Stack's Bowers ANA sale (Las Vegas, August 2020), where it sold for $504. The catalog description[1] noted, "BOLIVIA. Cob 8 Reales, 1731-P M. Potosi Mint. Philip V. PCGS EF-40 Gold Shield. A well detailed and nicely toned cob with mintmark and assayer letter strong on both sides, and a visible date. From the BKingdom Collection." The Potosí mint was the most prolific issuer of silver during the seventeenth and early eighteenth centuries, nearly all of it cobs such as this. This type was struck 1729-47 and superseded an earlier type (KM 31) which was 0.931 fine silver. The other Latin American mints placed the date near the edge where it rarely struck up, whereas Potosi issues have the date smack in the middle, ensuring that the date would be legible even if the rest of the design was smeared. As a result, Bolivian cobs can be collected by date, unlike the other mints (Mexico, Lima, Guatemala). The Potosí mint was the last to abandon the manufacture of cobs, in 1773.
Recorded mintage: unknown but common for the type.
Specification: 27.07 g, 0.917 fine silver, this specimen 26.25 g.
Catalog reference: Cayón-9340, KM-31a; Cal-Type 151 #888.
- Michael, Thomas, Standard Catalog of World Coins, 1701-1800, 7th ed., Iola, WI: Krause Publications, 2016.
- 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.
- Menzel, Sewall, Cobs, Pieces of Eight and Treasure Coins, New York: The American Numismatic Society, 2004.
- Paoletti, Emilio, 8 Reales Cobs of Potosí, 2nd Ed., Buenos Aires, 2006.
- [1]Orsini, Matt, Richard Ponterio and Kyle Ponterio, The August 2020 ANA Auction: World Coins, featuring the Duke of Lansing Collection, Santa Ana, CA: Stack's Bowers LLC, 2020.
Link to: