How Much Does a Silver Dollar Weigh?
Explore the definitive weights of US silver dollars, understanding the meticulous standards governing their creation and metal composition.
Silver dollars hold a significant place in both numismatic history and the modern investment landscape, captivating collectors and enthusiasts alike. These iconic coins, whether minted for general circulation in past eras or as modern bullion pieces, possess distinct physical characteristics that define their authenticity and value. Understanding the precise weight and metal composition of silver dollars is a fundamental aspect for anyone interested in these tangible assets. This knowledge provides insight into their intrinsic value and historical context.
Weight of Historical US Silver Dollars
Historical United States silver dollars, such as the Morgan and Peace dollars, were once common in daily commerce. The Morgan Silver Dollar was minted from 1878 to 1904 and again in 1921. The Peace Silver Dollar followed, minted from 1921 to 1928 and then again from 1934 to 1935, marking the last silver dollar series intended for general circulation.
Both coins share the same standard weight of 26.73 grams, or approximately 0.859 troy ounces. They consist of 90% silver and 10% copper, an alloy chosen to enhance durability for circulation. This composition means each coin contains 0.77344 troy ounces of pure silver.
Weight of Modern US Silver Dollars
Modern U.S. silver dollars are primarily produced as bullion coins for investors and collectors. The American Silver Eagle, first released by the United States Mint in 1986, is a recognized example. This coin contains exactly 1 troy ounce of pure silver, with a total weight of 31.103 grams.
The American Silver Eagle consists of .999 fine silver, meaning it is 99.9% pure. This high level of fineness is guaranteed by the U.S. government, solidifying its status as an investment-grade asset. The American Silver Eagle does not typically circulate as currency but is widely traded in precious metals markets.
Understanding Coin Specifications and Purity
Coin specifications, particularly fineness and weight, are fundamental to understanding the value and integrity of precious metal coinage. Fineness refers to the proportion of pure metal within an alloy, often expressed in parts per thousand. For example, a “.900 fine” coin is 90% pure silver, with the remaining 10% typically composed of base metals like copper. These base metals are intentionally added to increase the coin’s hardness and durability, as pure silver is relatively soft and susceptible to wear.
Mints adhere to stringent standards for coin production, including specific weight tolerances to ensure consistency and authenticity. While a standard weight is set for each coin type, minor variations can occur during manufacturing. Circulated coins may also experience slight weight reductions due to natural wear and abrasion from handling. The U.S. Treasury is authorized to prescribe reasonable manufacturing tolerances for coinage under 31 U.S. Code 5113.