8 Reales Resplandor, Hermosillo 1891: Value & Silver Content

If you inherited or found an 1891 8 Reales Resplandor struck at Hermosillo, here is the short answer: it is a genuine 0.900 silver coin, so it has a hard floor at melt value (about 24.4 grams of pure silver), and clean examples carry a collector premium on top of that. This is not a million-dollar rarity, but it is real money, not pocket change.

The "8 Reales" was the classic large silver dollar of Mexico, the peso fuerte, struck across many mints for decades. Yours came from the Hermosillo mint (mint mark "Ho") in the state of Sonora, dated 1891. The design nicknamed Resplandor (Spanish for "radiance" or "sunburst") refers to the Phrygian liberty cap over sun rays on the obverse.

What it is worth in 2026

Value comes from two things: the silver inside it, and the condition it survived in. Because it is 0.900 fine, it can never be worth less than its metal. At current silver prices, roughly 24.4 grams of pure silver puts the floor somewhere in the ballpark of 20 to 30 US dollars, and that floor moves with the daily silver spot price.

Above melt, condition drives everything. A worn, scratched coin trades close to bullion. A sharp, problem-free example with original luster is worth a clear premium to collectors. Hermosillo is a less common mint than Mexico City for these, which helps demand for well-preserved pieces.

Grade (condition)	What it looks like	Approx. value (USD)
Heavily worn / damaged	Flat details, scratches, cleaned	Melt value (about 20 to 30)
Circulated (Fine to VF)	Full design, honest wear	30 to 70
About Uncirculated	Light wear, most luster	70 to 150
Uncirculated / Mint State	No wear, original luster	150 and up, more for high grades

These are guide ranges. A certified high-grade example from a strong Hermosillo year can bring more; a genuinely scarce die variety can bring a multiple of the numbers above. Treat any single price you see online as one data point, not gospel.

The specifications (keep these to verify yours)

• Denomination: 8 Reales (peso fuerte)
• Year: 1891
• Mint: Hermosillo, Sonora (mint mark Ho)
• Metal: Silver, 0.900 fine (the historic octaval standard was 0.9028, in use until the 1905 monetary reform)
• Weight: 27.07 grams
• Diameter: 39 millimeters
• Edge: Reeded

Obverse: Phrygian liberty cap over sun rays (the Resplandor or radiant cap), with the legend LIBERTAD.

Reverse: The Mexican eagle facing forward, devouring a serpent on a cactus, with the legend REPUBLICA MEXICANA.

This piece belongs to the Restored Republic and Porfiriato era, part of the Mexican Republic 8 Reales silver series.

Is it rare?

Be honest with yourself here. Millions of 8 Reales were struck across all Mexican mints, so the type is common and the type alone is not rare. What is scarce is a specific mint and date in high grade. An 1891 Hermosillo coin in worn condition is a bullion coin with history. The same date in uncirculated condition, or with a verified error, is where the real premiums appear.

How to check what yours is worth

1. Weigh and measure it. Use a jewelry scale and a caliper. A genuine coin should land near 27.07 grams and 39 millimeters. A piece that is light or undersized is a red flag for a fake or a cast copy.
2. Check the mint mark and assayer. Confirm the Ho mint mark for Hermosillo and the assayer initials. Colonial and republican silver is heavily counterfeited, so the engraving style matters.
3. Grade it honestly. Wear, scratches, and cleaning all cut value. See the Mexican coin grading guide before you assign a grade.
4. Do not clean it. Cleaning a silver coin almost always lowers its collector value. Leave it as is.
5. Get a second opinion on high-value pieces. If you think you have an uncirculated example or an error, professional certification (NGC or PCGS) pays for itself by confirming grade and authenticity.

How to spot a fake

Counterfeits of Mexican 8 Reales are everywhere. The fast checks: weight and diameter that miss the numbers above, wrong edge (should be reeded), soft or mushy engraving, and a color or feel that is off (cast copies often look grainy). Be suspicious of any offer priced well below the silver value, that usually means the seller knows it is fake.

Where to sell it

Because this coin holds precious metal, sell only to a buyer who will show you the piece and its weight before money changes hands, and verify before you pay. Your safest options:

• A verified numismatic shop from the Pesoteca directory, which can appraise it on the spot without an overpriced middleman.
• The Pesoteca buy-and-sell forum, collector to collector.

Photograph the obverse, reverse, and edge, and compare against the range in this guide before you accept any offer. Avoid dumping it on social media to the first bidder.

Think you have an uncirculated Hermosillo example, or a possible mint error? Post clear photos in the Pesoteca forum and let the community weigh in before you sell.

In 1891 Porfirio Díaz was in office during the middle Porfiriato. These were the years of the 1889 Paris Universal Exposition with a Mexican pavilion and of the consolidation of the railroad as a pillar of the economy.

The Hermosillo mint (Ho) was set up in 1835 to handle Sonora's silver without depending on Álamos. It closed in 1895 with the centralizing reform of the Porfiriato.

Ho pieces have low mintages compared with Mexico City or Zacatecas. Late years (1893-1895) are harder to find in good grade.

For catalog reference, the variant of this mint is listed as KM#377.9 in Krause. The piece is .9028 fineness silver with a reeded edge and a theoretical weight of 27.07 grams. The 1891 Hermosillo, Sonora example corresponds to the mature stage of the mint, near its closure (1835-1895), and is identified on the coin by the Ho mint mark.

When hunting for Ho cap-and-rays 8 reales, it is worth comparing against the photographic reference in the Pesoteca catalog and prioritizing examples with a legible reverse (eagle, serpent, REPÚBLICA MEXICANA legend, and the value 8R) over pieces with only a bright obverse. The peer-to-peer price among collectors of the 1890s cycle tends to be fairer than the display case of a specialty shop, where the middleman markup can double the real reference.