Mexican 50 Peso Gold Coin (Centenario)
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The Centenario is one of the most recognized gold coins in the world, and one we see often here in Chula Vista given how many families have ties across the border. If you own one, here is exactly what you have.
Specifications at a glance
| Specification | Detail |
|---|---|
| Common name | Centenario |
| Denomination | 50 Pesos |
| Pure gold content | 37.5 g (1.2057 troy oz) |
| Gross weight | 41.67 g |
| Purity | 90% gold (21.6K) |
| Diameter | 37 mm |
| First minted | 1921 |
The story behind it
The Centenario was first struck in 1921 to mark 100 years of Mexican independence, which is where the name comes from. The coin features the Angel of Independence (El Ángel) on one side, with the volcanoes Popocatépetl and Iztaccíhuatl in the background, and Mexico's coat of arms on the other. It became, and remains, one of the most trusted gold coins for anyone holding gold by weight.
How much gold is really in it
This is the question we hear most. A 50 Peso Centenario holds 37.5 grams of pure gold, just over one and a fifth troy ounces. Even though the coin weighs about 41.67 grams total, the rest is a small amount of copper mixed in for durability, which is standard for gold coins meant to be handled.
That gold content is the heart of the coin's value.
How its value is calculated
The value of a Centenario comes mostly from its gold content measured against the current gold price. See how gold is priced →
Because the gold content is fixed and known, the coin's worth moves with the daily gold market. On top of that, certain years or exceptional condition can add a collector premium, though for most Centenarios the gold content is the main driver.
How to spot a genuine one
Counterfeit Centenarios exist, and some are convincing. Genuine coins have precise weight, exact dimensions, and consistent detail in the design. Weight and diameter that are even slightly off are a warning sign. This is exactly why bringing a coin to an experienced buyer matters: we verify authenticity before we ever talk value, using the same careful process we have relied on for decades.
Buying and selling a Centenario at Coin Mart
Whether you are holding a Centenario you inherited or looking to buy one, we can help. We authenticate and evaluate every coin in front of you, explain its gold content and any premium clearly, and make a fair offer based on the real market. Back to the Gold Coins overview →
Frequently Asked Questions
- How much pure gold is in a 50 Peso Centenario?
- 37.5 grams, which equals 1.2057 troy ounces. The coin's total weight is 41.67 grams at 90% purity.
- What year was the Centenario first made?
- 1921, to mark 100 years of Mexican independence, which is where the name Centenario comes from.
- Is a Centenario worth more than its gold?
- Usually its value is driven by its gold content, but certain years or exceptional condition can add a collector premium. We evaluate both.
- How do I know my Centenario is real?
- Bring it in and we will verify it. Genuine coins have exact weight and dimensions, and we authenticate before we value.
- Can I sell my Centenario at Coin Mart?
- Yes. We buy and sell Centenarios, evaluated and authenticated in front of you.
Visit Coin Mart Jewelry
📍 396 E St, Chula Vista, CA · Est. 1959
Bring your Centenario in for an honest, expert evaluation. Walk in or send us a message.