There were (and are) many private companies that mint silver and gold coins.
US Silver Corp (TSXV "USA", OTCQX -"USSIF" and DB Frankfurt "QE2") owns and operates the Galena Mine in the historic Silver Valley of North Idaho.
They mint these coins to get a premium dollar for their silver. The silver is worth $17.11 as I write this. If you are paying less then $18.00 an ounce for pure silver, that would be a fair price for private stamps.
Please be more specific which coin?
The coin has .77344oz of pure silver.
No. 92.5% silver is Sterling. US coin silver is 90%.
It contains 1 ounce of silver.
No, the US mint has never minted a 2 inch silver coin for circulation or for bullion purposes. The largest silver coin in diameter that I know of that was produced by the US mint would be the American Silver Eagle with a diameter of about 1.58 inches and the US silver dollars which have a diameter of 1.5 inches.
silver dollars
No. The US has never made a coin with pure silver. The closest to pure silver would be American silver Eagles. These coins are silver bullion coins. They are made of 99.93% silver and .07% copper.
With a date of 1979 the coin has no silver in it. 1969 was the last 40% silver circulating US half dollar. The coin is worth 50 cents.
The silver eagle coin has been the only US coin struck in pure silver. All other US silver coins were produced with an alloy of silver. Dollars, halves, quarters and dimes were produced with 90% silver prior to 1964. Halves were struck in 40% silver from 1965-1970.
You can as a federal reserve note but not in silver coin. The US government in the late 1960s halted redemption of silver coin for silver certificates.
The composition of a 40% silver US coin is the outer layers are .800 silver & .200 copper bonded to the inner core of .209 silver and .791 copper.
Try a coin dealer or take it to a coin show.