Alrededor de 350 pesos mexicanos (27 dolares americanos)
"Una Onza Troy de Plata Pura" is Spanish for "One Troy Ounce of Pure Silver". I think that you're asking about the Mexican "Onza" coin, although it has only been issued since 1982, which contains 1 troy ounce of silver and trades at its bullion value (although some dates trade at a small premium if they are in Brilliant Uncirculated or Proof condition).
The value of a 1979 una onza troy de plata pura, which translates to "one troy ounce of pure silver," is primarily based on its silver content. As of October 2023, the market price of silver fluctuates, so the coin's value typically aligns with the current price of silver, usually around $20 to $25 per ounce. Additionally, factors like the coin's condition, rarity, and demand among collectors can affect its overall value, potentially increasing it beyond just the silver content. For an accurate appraisal, checking recent sales or consulting a numismatic expert is recommended.
The Molders of Troy - 1980 TV was released on: USA: June 1980
Troy Mandaloniz was born in 1980.
Troy Kurtis was born in 1980.
Troy Selvey was born in 1980.
Troy Bell was born on November 10, 1980.
Troy Murphy was born on May 2, 1980.
Troy Murphy was born on May 2, 1980.
Troy Ready was born on 1980-05-15.
Troy Simon was born on 1980-07-20.
Troy Broadbridge was born on 1980-10-05.