Mexico 20 Pesos Gold Coin (Aztec Calendar Design)
Coin - Bullion/Numismatic Gold Coin · Yellow Gold with a warm, coppery hue typical of 900-purity Latin Monetary Union standard coins
Purity: 0.900 Fine Gold (21.6 Karat, containing 90% pure gold and 10% copper alloy)
Type
Coin - Bullion/Numismatic Gold Coin
Purity
0.900 Fine Gold (21.6 Karat, containing 90% pure gold and 10% copper alloy)
Gold Type
Yellow Gold with a warm, coppery hue typical of 900-purity Latin Monetary Union standard coins
Weight
16.6667 grams total weight, containing 0.4823 troy ounces (15.0 grams) of pure gold
Description
This historic Mexican 20 Pesos gold coin features the iconic Aztec calendar stone motif on the reverse and the Mexican coat of arms on the obverse. Struck in durable 0.900 fineness gold alloyed with copper, it combines significant precious metal content with rich cultural heritage, making it a favorite among both bullion investors and world coin collectors.
Key Features
Features the intricate central design of the Aztec calendar stone (Piedra del Sol) on the reverse and the classic golden eagle perched on a cactus on the obverse.
Color & Finish
Warm golden-yellow hue with a lustrous, satin field and detailed relief, showing light surface marks consistent with circulation or handling
Hallmarks & Stamps
Stated face value of 'VEINTE PESOS' and purity details implied by standard Mexican Mint specifications, featuring the Mexican national coat of arms
Dimensions Estimate
Standard specifications for the 20 Pesos coin: approximately 27.5 mm in diameter and 2.0 mm in thickness
Gemstones & Inlays
None, pure precious metal bullion and historic numismatic coin
Clasp & Closure
Not applicable; features a reeded edge
Chain & Links
Not applicable; individual coin format
Craftsmanship Details
Struck with high-pressure coin dies resulting in a crisp, deeply detailed relief of the complex Aztec calendar iconography and fine reeded edge work.
Authentication Indicators
Correct diameter-to-weight proportion, characteristic 900 fineness golden-copper color, distinct reeded edge, and sharp detailing consistent with genuine Mexican Mint production. Professional XRF testing is recommended.
Origin & Maker
Issued by the Banco de México and struck at Casa de Moneda de México (Mexican Mint)
Era & Period
Modern / Interwar Period (Restrikes and original issues produced from 1917 onwards)
Age Estimate
Mid-20th century production (Dates on restrikes often fixed at 1959, minted over several decades)
Cultural Significance
Represents the rich pre-Hispanic heritage of Mexico blended with its modern national identity, heavily sought after throughout Latin America and globally as a store of wealth.
Condition Notes
Estimated in Very Fine to About Uncirculated condition, with typical light contact marks on the high points and fields from handling, but retaining strong design details.
Value Estimate
Valued primarily based on its melt value (AGW of 0.4823 oz times the spot price of gold) plus a modest numismatic premium depending on exact condition and market demand.
Care & Maintenance
Store in a protective coin capsule or inert flip to prevent scratching. Avoid cleaning, scrubbing, or using chemical dips, as this can severely diminish numismatic value.
Similar Items
Other Mexican gold coins such as the 50 Pesos Centenario, 10 Pesos, and 5 Pesos gold coins, as well as US Liberty Head or Saint-Gaudens double eagles.
Interesting Facts
The design of the reverse depicts the Aztec Sun Stone, an iconic monolith discovered in Mexico City in 1790. The 20 Pesos coin was first authorized in 1917 under the monetary reform of 1905.