The 8 Reales series (1824–1897) featuring the national coat of arms and the radiant Phrygian cap (Cap & Rays) are large coins (27.07 g of .903 silver) that circulated widely in the Americas and Asia. The abundance of common years contrasts with a handful of extraordinarily rare dates, the result of errors, production losses, mint closures, or political events.
This article presents a chronological and mint-organized overview, aiming to provide a clear and structured reading experience. In each case, the reason for its rarity is explained, supported by reliable sources that substantiate the information presented.
Early Years and the Eagle in Profile (1824–1830)
1824 Mo-JM “REPUBLIC” — Legend error
The first republican issue of 1824 in Mexico City features a legendary variety where the word REPÚBLICA was engraved as “REPULICA” . The error is so noticeable that only five examples are known; NGC considers it the first major error of the series and describes it as a coveted icon.
Image by NGC
1824 Do RL — First 8 Reales coin of Durango
After Iturbide's fall, Durango was one of the first republican mints. The 1824 type, known as the "eagle in profile" or "hook-neck ," is a unique design that was only minted that year. The CoinVarieties catalog lists several auctioned examples and explains that this first issue from Durango is a one-year type; full strikes are scarce, and uncirculated examples are rare.
Image from ha.com
1825 Ga FS — Beginning of Guadalajara
The Guadalajara mint began its issues with the 8 Reales 1825 Ga FS coin. NGC notes that this is a historically significant date; the Resplandores reference indicates that these coins are typically found in fine to very fine condition , making an NGC-certified MS specimen unique. Its overall scarcity makes it key to the combination of this date and mint.
Image by NGC
1827 Ga FS — Overdate “1287”
A famous engraver's error changed the digit "2" to "8," giving the appearance of "1287." NGC reports that only four examples are known. The speed with which the die was corrected explains its extreme rarity and importance among collectors.
Image by NGC
1829 EoMo LF — Mint of the State of Mexico
The Tlalpan mint (State of Mexico), identified as EoMo, operated only from 1828 to 1830. NGC describes the 8 Reales 1829 EoMo-LF coin as very rare , indicating that all issues from this mint are sought after by collectors.
Image by NGC
Rarities from the mid-19th century
1846 GC MP — Mule of Guadalupe and Calvo
The Guadalupe y Calvo mint produced few coins, and its 1846 variety combines a small cap die with a standard reverse. NGC classifies it as “very rare” and notes that only one MS grade example is known; probably the finest in existence. Coins from this mint are valued for its mining history and its brief period of activity (1836–1852).
Image by NGC
1847 Mo MF — Key of the Mint of Mexico
The 1847 Mo-MF 8 Reales coin is considered the key date in the entire production of the Mexico City Mint . A Heritage catalog indicates that it is one of the most sought-after dates in the series; few pieces survive in near- mint condition . An equally rare 1847/6 variant also exists. The combination of low mintage and widespread wear explains its status.
Image from ha.com
Rarities of Oaxaca
1858 Oa — “a” within O, unique piece
The Oaxaca mint began producing 8 Reales coins in 1858 with a curious monogram: a lowercase " a " inside the "O". NGC explains that this issue is unique ; all references describe it as such, and the known example comes from the Hubbard/McCormick collections. Its one-year type status and the fact that it is the only known example make it one of the most famous coins in the series.
Image by NGC
1859 Oa AE — Second date of Oaxaca
The second issue from Oaxaca, identified with the assayer AE, is considered one of the rarest from this mint. According to the NGC, the presence of examples in high states of preservation is very limited, with only a handful of pieces having survived in such condition.
Image by NGC
Guadalajara during the Reform War and the Empire (1860–1867)
1860 Ga JG — “Dot on the tail”
During the siege of Guadalajara in 1860, General Severo del Castillo ordered coins to be minted with confiscated silver. The engraver Albino del Moral secretly marked these coins with a dot on the loop of the snake's tail. NGC identifies this variety as extremely rare ; only one example is known in MS condition . After the fall of the city, the government issued decrees to withdraw the rebel coins, which explains their low survival rate.
Image by NGC
The period from 1824 to 1897 for the Mexican 8 Reales coin is replete with common coins that circulated throughout the Pacific. However, the dates described above demonstrate that engraving errors, first issues from a mint, changes in government, or emergency issues can produce extraordinary rarities. For the advanced collector, these pieces represent the pinnacle of Mexican numismatics and warrant careful research of primary sources.
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