What is the value of a 1961 Un Peso Estados Unidos Mexicanos?

Answer 1

The Un Peso, or one peso, was minted, beginning in 1957 through 1967 as a circulating coin in Mexico (KM#459). They weighed 0.514 troy ounces, total mass. "Estados Unidos Mexicanos" is Spanish for "Mexican United States."

As a foreign exchange, it is basically worthless. In 1992, the "old" Peso was re-valued, then exchanged at a rate of 1000 "old" Pesos for 1 "new" Peso. As of November 2009, the exchange rate was about 13 "new" pesos to the US dollar.

As bullion, the coin weighs 15.987456 grams, or about 0.514 troy ounces total coin weight, of which 10% is silver, or 0.0514 troy ounces (10%). As of 21 September 2012, with silver at about US $34.78 per troy ounce, that gives your coin a "melt value" of about $1.79 US, or approximately $2.00, which includes the 90% copper content. As a practical matter, however, the low percentage of silver means that a bullion buyer would likely pay nowhere near that amount.

As a numismatic item, the value depends on the coin's condition. 52.6 million were produced, so it is not particularly rare. In Brilliant Uncirculated condition, it may be worth anywhere from $5 to $8. In circulated condition, however, it is worth little more than its $2.00 melt value.