Mexico 1870-Pi S peso

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Ponterio sale 169, lot 11290
Mexico 1870Pi peso rev Ponterio 169-11290.jpg
from Stack's Bowers 2017 NYINC sale, lot 7004
Mexico SB117-7004r.jpg
Mexico SB118-21234o.jpg
Mexico SB118-21234r.jpg

The first specimen was lot 11290 in Ponterio sale 169 (Baltimore, November 2012), where it sold for $258. The catalog description[1] noted, "MEXICO. Peso, 1870-PiS. Very scarce. NGC AU Details--Surface Hairlines." The second specimen was lot 7004 in Stack's Bowers NYINC sale (New York, January 2017), where it sold for $1,410. The catalog description[2] noted, "MEXICO. Peso, 1870-PiS/A. PCGS AU-55 Secure Holder. SCARCE. The only example at this numeric grade with only one piece certified finer at NGC and PCGS. Appealing tawny russet toning." The third specimen was lot 21234 in Stack's Bowers 2018 NYINC sale (New York, January 2018), where it sold for $1,560. The catalog description[3] noted, "MEXICO. Peso, 1870-PiS/A. NGC MS-61. KM-408.7. RARE date and the single finest certified by NGC or PCGS. Sharply struck with soft satin luster and just a light veneer of tone. A real prize for the advanced collector of this series. From the Alex Siegel Collection." Shown is a balance scale peso, of a type struck 1869-1873. It was not a success in the export market, the destination for most of Mexico's silver, so the type was discontinued in 1873 in favor of the resumption of the "cap and ray" eight reales. This issue from San Luis Potosi is rare. Other mints include Culiacan (scarce), Durango (scarce), Mexico City (common), Oaxaca (scarce), Chihuahua (common), Guanajuato (common), Zacatecas (common) and Guadalajara (scarce).

Recorded mintage: 1,967,000 (including assayers S, G and O).

Specification: 27.07 g, .903 fine silver, .786 troy oz ASW.

Catalog reference: KM-408.7.


  • Buttrey, T. V., and Clyde Hubbard, A Guide Book of Mexican Coins, 1822 to date, 6th ed., Iola, WI: Krause Publications, 1992.
  • [1]Ponterio, Richard, Ponterio sale 169: The November 2012 Baltimore Auction, Irvine, CA: Stack's Bowers, LLC, 2012.
  • [2]Ponterio, Richard, The January 2017 NYINC Sale: Ancient Coins, World Coins & Paper Money, featuring the Richard Stuart Collection, Santa Ana, CA: Stack's Bowers LLC, 2016.
  • [3]Ponterio, Richard, Kyle Ponterio, John Kraljevich and Cris Chatigny, The January 2018 NYINC Sale: Ancient Coins, World Coins & Paper Money, featuring the Eldorado Collection of Colombian and Ecuadorian Coins, Santa Ana, CA: Stack's Bowers LLC, 2017.
  • Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1801-1900, 9th ed., Iola, WI: Krause Publications, 2019.

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