Counterfeit Detection: Mexico 1920 2 Pesos

Following the Mexican Revolution just over a century ago, Mexico struck gold coins in various denominations, the smallest of which was the 2 Pesos. With a 13 mm diameter (smaller than a US dime) and containing about a twentieth of an ounce of gold, any purported example should get a close examination with a loupe and a scale.

Genuine examples of this coin have a numismatic premium that can grow to several hundred dollars in the highest grades. Regardless of grade, the coin is attractive to type collectors (because it is known in only a handful of dates), to gold collectors (who are looking for affordable denominations) and to those fascinated by Mexican numismatics. NGC recently received a purportedly example of a Mexico 1920 2 Pesos.

Overall, the coin has an unnatural luster and pimply surfaces. Note the rough surfaces on the letters. In addition, the highest points of the design don’t appear to have been fully transferred from the die, which is an indication of low striking pressure. This weak strike is evident in the lack of details in the head and body of the eagle, which can be seen below.

Meanwhile, the rims are also weak and there is quite a bit of detail missing from the eagle’s wings. The porous appearance on the obverse of the counterfeit piece is likely attributable to excessive use of the obverse die, a condition commonly observed in counterfeit coinage. In addition, note the scratches located at approximately the 11 o’clock position on the reverse. These markings are consistent with destructive testing performed to determine whether the coin was struck in gold — which it was.

Because this counterfeit is still struck in a gold composition, it retains considerable intrinsic value. But as a forgery, it has no additional numismatic value. If you want to make sure your coin collection is the real deal, keep in mind that NGC backs its determinations of authenticity and grade with the NGC Guarantee.

Did you know? NGC has created a comprehensive Counterfeit Detection resource to help collectors and dealers identify counterfeit and altered coins. Visit NGCcoin.com/counterfeit.