1922 C St Gaudens 20 Gold piece?
Any St Gaudens $20 Gold piece is worth at least the spot price for an ounce of gold. it weighs roughly 33 grams and is 90% gold 10% copper
All coins have a specific weight which you can find in coin referencing material per country along with a specific diameter. For example an U.S. 1922 Saint Gaudens Double Eagle ($20 gold piece) weighs 33.436 grams which contains 90% gold. If a coin is not this exact weight and diameter from this specific year then it is not the gold coin in question. If you are not concerned about defacing the coin there are gold…
August 4, 2009 The 1924 Saint-Gaudens $20 gold coin was produced at 3 US Mints: Philadelphia, Denver and San Francisco. The values of these coins in very fine condition are shown in the following list: 1924-P [Philadelphia]........$1400 1924-D [Denver]................$1800 1924-S [San Francisco]......$1800