the coins of 8 Reales of the Mexican Republic minted between 1824 and 1897 They are one of the most studied fields of Latin American numismatics. The abundance of mints and assayers generated hundreds of combinations, but some pieces are exceptionally rare due to typographical errors, short-lived assayers, or very small mintages. This analysis is based solely on recognized numismatic literature, articles from institutions such as NGC o PCGS and documented results from prestigious auction houses.
Rare mint assayers
Durango
During the Republican period, the Durango Mint produced large quantities of 8 Reales coins, but several issues with uncommon assayers are now true rarities. Research by Mike Dunigan and JB Parker indicates that these pieces... 1874–1875 with initials JH (José Othón Huitrado) along with Cayetano Mascareñas are very scarce. In 1877 Coins were minted with the initials JMP (José María Peimbert); this year is cited as the rarest issue of the mintAnother ephemeral essayist was Jacobo Blanco (JB)active for about four months in 1885, whose coins are extremely scarce.
A notable variant is the coin 8 Reales 1866/4 CM/LT, described in the catalog Glows and second rarest combination in DurangoThe numismatic community is only aware of one high-grade specimen.
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Guanajuato
Although Guanajuato was one of the most productive mints, some combinations are extremely difficult to find:
1870 Go YF: This date/assayer is considered very rare and of unknown minting.
Image Stack's Bowers
1826 Go MJ: An auction house catalog describes it as date and very rare assayersought after by collectors.
Image Stack's Bowers
1857/5 Go PF: The World Numismatics website points out that the over-date 1857/5 It is very scarce and conditionally very rare.
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Guadalajara
1863 Ga FVThe FV tester appears briefly in 1863. One report states that this variety is extremely rarewith few known examples and high prices at auctions. After 1875, Guadalajara dates are common; that is why this date-assayer combination stands out.
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1830 Ga LP: In 1830, two varieties were minted: the standard one with assayer FS and an overdated 1830/29, both rare. However, the variety LP is "very rare"; he Standard Catalog of World Coins It records that only countermarked copies existed, and the unmarked piece described by Ponterio disproved that belief.The date/assayer combination LP is therefore one of the great rarities of Guadalajara.
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Culiacan
During the Second Empire (1864–1867), the Culiacán mint produced few republican coins. 8 Reales 1866 CE se considera the strangest year or the second strangest from the mint. Dunigan-Parker assigns this type the classification “Extremely Rare”
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Chihuahua
In 1866 the Chihuahua mint was supposed to produce imperial currency, but instead issued a small quantity of republican 8 Reales coins:
1866 Ca‑JG: CoinVarieties explains that the combination JG was overlooked and is very rare, since many specimens were incorrectly cataloged as JCAn auction house describes this piece as Extremely rare.
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Alamos
The Sonoran mint of Álamos produced a very limited volume of 8 Reales coins. The issue dated 1867 with assayers DL It is characterized by having been minted with visibly deteriorated dies, which reinforces its status as a scarce piece. This combination of low production and technical deficiencies in the minting process has led to the coin being considered one of the rarest issues from that mint.
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Real de Catorce
This Potosí mint opened in 1863 and only operated intermittently. The coin of 1863 It presents interesting variations:
1863 Ce/Pi ML: CV Coins notes that the mint struck a limited number of these coins and that the over-mint/over-assayer Ce/Pi ML It is classified as very rare by Dunigan-ParkerThe Morton & Eden auction confirms that the copy with the mintmark is indeed mintmarked. Ce over Pi and assayer ML is rare.
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San Luis Potosi
The emision of 1860 Pi with tester MC (Mariano Cataño) is considered extremely rare. One certified MS62 grade specimen is known, described as exceptionally rare, and to date is the only one registered in Mint State status with both the NGC and PCGS.
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Oaxaca
1859 Oa AE: NGC notes that the type with testers AE es highly scarcewith very few surviving specimens.
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Hermosillo
In 1835–1836, the Hermosillo Mint operated without authorization. The coins 1835–1836 Ho PP They had an estimated print run of 50,000-70,000 pieces and were quickly removed and melted down; therefore, surviving examples are extremely rare.
Another short-lived issue occurred in 1839, probably with the assayer PRThe mint ceased operations shortly afterwards, which contributes to these coins being equally scarce.
In the late Republican era, NGC highlights that the 8 Reales 1864 Ho PR It is among the rarest date/assayer combinations of the mint.
Image NGC
The collection of Mexican 8 Reales coins from 1824–1897 offers a vast array of variations, but the combinations mentioned are distinguished by their extreme documented scarcity. This rarity may have arisen from minting errors, assayers who worked for only a few months, military occupations, or the transition to the decimal system. For the advanced collector, identifying these combinations is essential; in addition to their historical appeal, they often fetch high prices at auction and represent key pieces for completing the series.
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