All $10 gold coins minted in the United States in 1893 belong to the Liberty gold coin set. Determine the rarity of these coins by examining their mint mark, and determine the condition grade of the coin.
- Look for a mint mark
Locate the mint mark on Liberty $10 gold coins on the reverse side, which features the image of a left-facing bald eagle. The mint mark is right above the letter "N" in the word "TEN."
- Determine the city of origin
If the coin has no mint mark, it was minted in Philadelphia. These are the most common coins. If it has a CC mint mark, it was minted in Carson City. Carson City is the rarest mint mark on these coins. An O mint mark, which indicates a coin minted in New Orleans, is the next most rare mark. The S mint mark, which is rarer than the Philadelphia coins but more common than the Carson City or New Orleans coins, designates the San Francisco production facility.
- Grade the condition of the coin
Determine the condition of the coin by examining its edges and the engraving for dullness, discoloration and scratches. Coins in good condition are the most rare. Using a grading scale, find the numeric value for the coin's condition.
- Check a reference guide
Consult a reference or pricing guide to find estimates of the number of coins available that share a mint mark and condition grade with your coin.