8 Reales Resplandor Zacatecas 1887: Value & Prices

If you inherited an 1887 Mexican 8 Reales with a radiant cap and an eagle, you own real silver, not a fortune in most cases. A worn but genuine example is worth its silver content, roughly 18 to 25 USD depending on the spot price. High-grade pieces with original luster climb into the low hundreds. Here is how to tell which one you have.

What this coin actually is

The 8 Reales Resplandor (Spanish for "radiance" or "cap and rays") was Mexico's workhorse silver coin through the 19th century. The 1887 issue was struck at the Zacatecas mint, one of the most productive silver mints in the country because of the region's rich silver deposits. This is the type Americans of the era often called the "Mexican dollar," and it circulated widely in both domestic and foreign trade.

By the late 1880s the eight-reales denomination was in its final years, giving way to the decimal peso system. That makes coins like the 1887 among the last of their kind.

Specifications (check yours against these)

Feature	Detail
Metal	Silver, 0.903 fine
Weight	27.07 grams
Diameter	39 mm
Edge	Reeded
Obverse	Radiant Phrygian cap over book and scales
Reverse	Republican eagle
Mint	Zacatecas (mintmark Zs)

The radiant cap over a book and scales is what gives the series its "resplandor" name. The reverse carries the Mexican republican eagle.

What it's worth in USD

Value on this coin is driven by two things: silver content and grade. It is not a rare date, so the metal sets the floor and condition sets the ceiling.

• Melt / bullion floor: the coin contains about 0.786 troy ounces of pure silver. At current silver prices that is roughly 18 to 25 USD, and no genuine, undamaged example should sell for less.
• Circulated, honest wear (Fine to VF): typically 25 to 60 USD, a modest premium over melt for collector demand.
• Extremely Fine to About Uncirculated: roughly 60 to 200 USD when the cap rays and eagle feathers are still sharp.
• Uncirculated with original luster (MS): several hundred dollars is realistic for a fully struck, well-preserved Zacatecas example. Certified MS pieces of this series have sold in the low four figures at major auctions when eye appeal is exceptional.

Assayer varieties and small differences year to year matter to specialists, but for the average inherited coin, grade and metal are what set the price.

The myth to kill

Because these coins look old and heavy, people assume they are worth thousands. They usually are not. Zacatecas struck this denomination in large quantities, so survivors are common. A worn 1887 8 Reales is a silver coin worth silver money, plus a small collector premium. The four-figure prices you see quoted apply only to top-grade, certified, luster-bright examples, which are a small fraction of what survives.

How to tell if yours is genuine

Counterfeits of Mexican 8 Reales exist, including modern silver-plated fakes and old contemporary copies. Do two quick checks first:

1. Weigh it on a jewelry scale. It should be very close to 27.07 grams. A light coin is a red flag.
2. Measure the diameter with calipers. It should be about 39 mm, with a reeded (grooved) edge.

Then look at the details: the engraving style, the Zs mintmark, and the assayer initials. Genuine coins show crisp, consistent lettering. Be suspicious of any offer priced far below the value of the silver itself, and of any coin that feels wrong in weight. For a definitive answer, submission to a grading service like NGC or PCGS confirms authenticity and grade in one step.

Where to sell it

• A verified coin dealer will appraise it on the spot and pay based on grade and silver content.
• A collector marketplace or forum often gets you a better price than a walk-in shop, especially for higher-grade pieces.
• Because this is precious metal, only sell to buyers who will inspect the coin and its weight in person or with clear photos. Photograph the obverse, reverse, and edge before you list it.

Avoid dumping it to the first offer on social media. Check the grade-based range above so you know your floor.

Think you might have a high-grade or error example? Post clear photos of both sides on the Pesoteca forum and let the community weigh in before you sell.

In 1887 Porfirio Díaz governed in his second consecutive term. Years of railroad expansion (Mexico City-Ciudad Juárez, Mexico City-Laredo) and of the consolidation of foreign capital in mining and industry.

The Zacatecas Mint (Zs) was one of the 3 great mints of the late New Spain and republican system, fed by the mines of Vetagrande and Fresnillo. It operated until 1905, already under the Porfiriato's gold standard.

The Zs 8 reales are the benchmark, alongside Mo, for collectors of the radiant-cap peso. High mintages in the 1880s make them accessible, but years with a new assayer are sought after.

For catalog reference, this mint's variant is listed as KM#377.13 in Krause. The piece is .9028 silver with a reeded edge and a theoretical weight of 27.07 grams. The 1887 Zacatecas example corresponds to the mature stage of the mint, near its closure (1810-1905), and is identified on the coin by the Zs mint mark.

When hunting Zs radiant-cap 8 reales, it's worth comparing against the photographic reference in the Pesoteca catalog and prioritizing examples with a legible reverse (eagle, serpent, legend REPÚBLICA MEXICANA, and value 8R) over pieces with only the obverse bright. The peer-to-peer price among 1880s-cycle collectors tends to be fairer than the display case of a specialized shop, where the middleman markup can double the real reference.