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How can you tell if a 2 coin is gold?
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Joshua White

Mexican 2 Peso bimetallic coin with Aztec symbols, dated 2019.
2 Pesos Mexico

I watched a collector lose $800 on a "gold" Napoleon III coin last week. Let's prevent that.

Real gold coins always show precise weight measurements and mint marks. Use magnet tests (gold isn't magnetic) and look for .900+ purity stamps near the edge.

How much gold is in a 2 peso gold coin1?

Mexico's 2 peso coins trick many collectors. I nearly bought fakes in 2018.

Authentic 2 peso coins contain 1.2g of 90% pure gold (0.0375 troy oz). Counterfeits often use brass cores with gold plating.

Three verification steps for 2 peso coins:

  1. Weight check: Real coins = 4.666g ±0.1g
  2. Diameter measurement: 15.5mm exact
  3. Edge inspection: Reeded (grooved) edges
Test Type Authentic Result Fake Result
Magnet No reaction Weak pull
Acid Test No color change Green tint
XRF Scan 90% Au <10% Au

How much gold is in a 10 peso gold coin2?

10 peso coins vary wildly. I helped the British Museum authenticate 8 variants.

Genuine 10 peso coins contain 7.5g of 90% gold (0.2419 troy oz). Post-1920 issues often have lower purity - check mint years carefully.

Key year variations:

  • 1917-1920: 90% gold (7.5g)
  • 1921-1931: 50% gold (3.75g actual)
  • Modern replicas: Usually 0.5g gold plating

"Many 1920s coins we test show mercury contamination from improper refining," says our lab director Chen Li.

What karat is 50 pesos gold coin?

Mexico's 50 peso Centenario3 confuses buyers. Let's decode its true value.

Official 50 peso coins are 21.6 karat (90% gold). Each contains 37.5g pure gold - equivalent to 1.2057 troy ounces.

Production timeline impacts value:

  • 1921-1931: Original circulation strikes
  • 1947-1972: Restrikes with softer details
  • 1996-present: BU (Brilliant Uncirculated) editions

We use this coin to train new technicians in die alignment - even 0.1mm errors create visible doubling.

How much gold is in a 2.50 gold coin?

The $2.5 Indian Head coin's gold content hides in plain sight.

Authentic $2.50 coins contain 4.18g of 90% gold (0.1346 troy oz). Worn coins lose up to 0.5g through circulation.

Grading vs gold value:

Condition Gold Value Collector Premium
Worn $265 +$0
Fine $265 +$75
Uncirculated $265 +$1,200

Our laser scanners detect tooling marks invisible to loupes - crucial for museum-grade authentication.

Precision Crafting for Discerning Collectors

After 12 years serving collectors like Aisha Al-Farsi (UAE Royal Protocol) and Diego Martinez (Olympic licensee), we've mastered gold coin production:

Why choose our workshop?

  • Dual plating options (18K/24K) with MIL-G-45204 compliance
  • Diamond-cut edge lettering down to 0.3mm
  • XRF-certified materials batch tracking
  • Rush 5-day service for time-sensitive projects

Sample educational set specs:

Denomination Gold Content Tolerance Plating Thickness
2 Peso 1.2g ±0.02g ±0.5% 5µm minimum
10 Peso 7.5g ±0.05g ±0.3% 10µm layered
50 Peso 37.5g ±0.1g ±0.2% 15µm with sealant

Conclusion

Verify gold coins through weight, measurements, and mint marks. For custom collectibles, partner with certified manufacturers using traceable materials.


Contact my team at INIMAKER® for museum-grade replicas: info@inimaker.com


  1. Understanding the gold content of 2 peso coins can help you avoid fakes and make informed purchases. 

  2. Learn about the variations in gold content of 10 peso coins to ensure you are buying authentic pieces. 

  3. Discover the true value of the 50 peso Centenario coin to avoid overpaying for counterfeit coins. 

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