
Based on numismatic standards, the official weight of a silver dollar when it was minted by the U.S. Mint is 26.73 grams. This standard weight applies to a coin in uncirculated, or mint-state, condition. The composition of the coin is 90% silver and 10% copper.
The actual weight of a specific Morgan silver dollar today can vary slightly from this official specification. The primary reason for any deviation is wear and tear from circulation. As a coin is handled and used over the years, a very small amount of its metal is worn away, which reduces its total weight. Therefore, a heavily circulated and worn Morgan dollar will weigh slightly less than the standard 26.73 grams. Conversely, an uncirculated coin that has been well-preserved should weigh very close to its original mint weight.


