how many troy ounces is a silver dollar

[McBethany]

As the provided context is not accessible, this answer is based on established numismatic and metallurgical knowledge.

The quantity of silver in a United States silver dollar, measured in troy ounces, is contingent upon the specific coin in question, as different series were minted to varying specifications. The most commonly referenced historical silver dollars, namely the Morgan Dollar (minted from 1878 to 1921) and the Peace Dollar (minted from 1921 to 1935), share the same composition. These coins have a total weight of 26.73 grams and are composed of 90% silver and 10% copper. Consequently, the actual silver weight (ASW) in these coins is approximately 0.7734 troy ounces.

In contrast, the modern American Silver Eagle, a bullion coin first issued in 1986, is also a legal tender one-dollar coin. However, its primary purpose is for investment in precious metals. By design, the American Silver Eagle contains precisely one troy ounce (31.103 grams) of .999 fine silver.

Therefore, a crucial distinction must be made. Historical circulating silver dollars, such as the Morgan and Peace types, contain slightly more than three-quarters of a troy ounce of silver. The contemporary American Silver Eagle bullion coin, on the other hand, contains exactly one troy ounce of silver.