The Mexican Un Peso was struck in (10%) .100 silver from 1957-1967 by the Mexico City Mint - the oldest mint in North America.
These coins weigh 16 grams and contain 1.6 grams of pure silver.
To figure out the dollar amount of silver in each coin, divide the price of silver by 31.1 and multiply by 1.6.
The actual silver weight is .3856 troy ounce.
From 1977 to 1979 the 100 Peso coin was .72 fine silver, weighed 27.77 grams, and contained .6429 troy ounces of silver.
It depends on the condition it's in. It may vary anywhere from $10.00 to $30.00 US dollars (June 2011)... Of course it will vary with the price of silver
I have a 1934 "un peso" silver 720 peso, what is it worth?
.690 Oz
A 1921 Mexican 1 Peso coin contains 0.3856 troy ounces of silver.
0.3856 troy ounces of silver
0720 oz
1/20 of an ounce. This was the last year that Mexican Pesos contained any silver.
There is no silver content in it. It is composed of what is referred to as cupronickel. Typically this is a mix of 75% copper, 25% nickel, and a trace amount of manganese.
I have a 1934 "un peso" silver 720 peso, what is it worth?
1940 silver peso
yeah it is 10%
Mexican peso
0.5 oz
From 1821 until 1905.
A 1965 Mexican Peso is 10% silver (although mostly on the outside - the middle of the coin has basically no silver at all) and contains 0.0514 troy ounces of silver (about 65 US cents worth). Numismatically, the coin is worth about US$0.85 in Extremely Fine condition (very little wear) and about US$2.00 in Brilliant Uncirculated condition.