That's a great question! The value of a 1921 silver dollar really depends on which type of coin it is, as two different designs were minted that year: the Morgan Dollar and the Peace Dollar. Identifying which one you have is the first step.
The 1921 Morgan Silver Dollar is the more common of the two. In average circulated condition, its value is typically between $25 and $35. If the coin is in uncirculated, mint state condition, the value starts around $50 to $60 and can climb to several hundred dollars or even thousands for a coin in exceptionally pristine condition. The value is also influenced by the mint mark. Coins minted in Denver ("D") or San Francisco ("S") can sometimes be worth more than those from the Philadelphia mint, which have no mint mark.
The 1921 Peace Silver Dollar is a different story. This was the very first year the Peace Dollar was issued, making it a "key date" coin for collectors and much rarer than its Morgan counterpart. Because of its rarity, it's significantly more valuable. A 1921 Peace Dollar in circulated condition is worth around $150. If the coin is uncirculated, its value can easily reach into the thousands of dollars. All 1921 Peace Dollars were minted in Philadelphia and do not have a mint mark.
So, to figure out what your coin is worth, you'll first need to determine if it's a Morgan or a Peace dollar and then carefully assess its condition, as that is the biggest factor in its final value.
