Mexico 1890-Pi R 25 centavos

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Ponterio sale 159, lot 9129
photo courtesy of Ponterio & Associates
from the Big Orange Collection
from the Big Orange Collection

This specimen is a common date of a series struck 1869-90 at the Potosi mint, which closed in 1895. The SCWC records an overmintmark (“Pi/Zs”) and an overassayer (“R/B”) in addition to the regular date. This twenty-five centavos piece replaced the two reales struck since colonial times. It, in turn, was replaced by a smaller 20 centavos piece in 1898. The first specimen was lot 9129 in Ponterio sale 159 (Baltimore, March 2011), where it sold for $258.75. The catalog description[1] noted, "MEXICO. Potosi. 25 Centavos, 1890-PiR/B. Light attractive toning. NGC MS-65."

Specification: 6.77 g, .903 fine silver, .196 troy oz ASW.

Recorded mintage: 64,000.

Catalog reference: KM 406.8.


  • Cuhaj, George S., and Thomas Michael, Standard Catalog of World Coins, 1801-1900, 7th ed., Iola, WI: Krause Publications, 2012.
  • 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 159: the March 2011 Baltimore Auction, featuring the Len Novotny collection, Irvine, CA: Stack's-Bowers & Ponterio, 2011.

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