8 Reales Resplandor, Hermosillo 1879: Silver Coin Value

If you found an old Mexican silver coin marked "8 REALES" with a sunburst and a cap on one side and an eagle on the other, you have a real silver piece with a built-in floor value. The 1879 Hermosillo 8 Reales contains roughly 0.78 troy ounces of pure silver, so it is worth at least 20 to 25 USD in metal at current prices, and more depending on condition. It is not a rare date that sells for thousands, but it is genuine silver and never worth just "a few dollars."

Americans usually call this type the "cap and rays" 8 Reales. Mexican catalogs call it the Resplandor (Spanish for "radiance," the sunburst behind the liberty cap). This was the workhorse silver dollar of Mexico for most of the 1800s, traded worldwide, including in the United States and China.

What it's worth in 2026

Value comes from two things: the silver content (a hard floor) and the condition, called the grade. This is a common date from a common mint, so most circulated examples trade close to their silver value with a modest collector premium.

Condition	What it looks like	Approximate value (USD)
Heavily worn (Good/VG)	Flat details, readable design	22 to 35
Circulated (Fine/VF)	Clear eagle, some wear	35 to 60
Lightly worn (XF)	Sharp details, light wear on high points	60 to 120
About Uncirculated / Mint State	Full detail, original luster	150 to 500+

These are general ranges for the type. A certified Mint State example from a scarcer mint or year can go higher, but a plain circulated 1879 Hermosillo piece is a silver coin first and a collectible second. Anyone who tells you a common circulated example is worth thousands is wrong.

The specs (verify your coin against these)

Counterfeits of this type exist, so the physical numbers matter. A genuine 1879 Hermosillo 8 Reales should measure:

• Weight: 27.07 grams
• Diameter: 39 millimeters
• Metal: 0.900 silver (also cited as 0.9028 fine under the republican standard)
• Pure silver content: about 0.786 troy ounces
• Edge: reeded (grooved), not smooth

If your coin is noticeably light, undersized, or has a plain edge, treat it as suspect. A jeweler's scale and a caliper settle most authenticity questions in under a minute.

How to read the coin

Front (obverse): a liberty cap over a burst of sun rays, with the word LIBERTAD (Spanish for "liberty"). That sunburst is the "Resplandor" the type is named for.

Back (reverse): the Mexican eagle facing forward, standing on a cactus and eating a snake, with REPÚBLICA MEXICANA around it. Below the eagle you will find small letters and numbers identifying the mint, the assayer's initials, and the fineness.

The mint mark matters. Hermosillo coins carry an "Ho" mint mark. Mexico had over a dozen mints striking these, and some (like Alamos or certain years of smaller mints) are scarcer and more valuable than Hermosillo. Confirm the mint mark before assuming what you have.

About the sunburst 8 Reales in general

This piece belongs to Mexico's 8 Reales silver series, struck from the 1820s until the monetary reform of 1905 replaced them with the peso. They were made across the country's regional mints, which is why year, mint mark, and assayer combinations create most of the value differences. The design was one of the most trusted silver coins in the world during the 19th century.

How to check what yours is really worth

1. Confirm it's silver. Weigh it (should be near 27 grams) and check the edge is reeded. Silver has a floor value no matter the grade.
2. Find the mint mark. Look below the eagle for the two-letter code (Ho for Hermosillo). This changes value more than the year does.
3. Grade it honestly. Wear on the high points drops the price fast. Use the Pesoteca grading guide to place your coin in one of the bands above.
4. Get a second opinion before selling. Photograph the front, back, and edge in good light. Post it in the Pesoteca forum or take it to a shop.

For higher-grade or uncertain pieces, third-party certification from NGC or PCGS both authenticates the coin and locks in a grade that buyers trust. That step usually only pays off on coins worth 150 USD and up.

Where to sell it

For selling, a verified dealer from the Pesoteca shop directory will value it on the spot, or you can list it in the collector marketplace where buyers know the type. Because this is a precious-metal coin, never sell below the silver melt value, and never hand it over before payment. Skip dumping it on social media to the first offer; you will almost always leave money on the table.

Got a box of these with different mint marks and years? Post clear photos in the Pesoteca forum and let the community help you spot the ones worth more than melt.

In 1879 Porfirio Díaz was governing in his first presidential term. It was a consolidation of the Porfirian order with an emphasis on pacification, railroads, and foreign capital.

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.

As a catalog reference, the variant from 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 1879 example from Hermosillo, Sonora corresponds to the mid phase of the mint (1835-1895) and is identified on the coin by the mint mark Ho.

When hunting radiant 8 reales from Ho, it's wise to compare against the photographic reference in the Pesoteca catalog and to prioritize examples with a legible reverse (eagle, serpent, legend REPÚBLICA MEXICANA, and value 8R) over pieces with only a bright obverse. Peer-to-peer prices among collectors of the 1870s cycle tend to be fairer than the display case of a specialized shop, where a middleman's markup can double the real reference.