1.5 Troy ounce .999 silver.
Struck in 1994, this is the last of the annual 1.5 ounce medals produced by Gallery Mint. It commemorates the 202nd anniversary of the Coinage Act of 1792 which called for the creation the US Mint and outlined the rules for US coin design and the denominations to be minted.
 
Obverse: Engraving of the original US Mint building in Philidelphia. Scroll of "Act of April 2, 1792" with roman numeral date of 1994 on base
Reverse: Flowing Hair similar to earliest US Mint designs including inscription, "Liberty Parent of Science & Indus." 
Edge of raised inscription struck in multipiece collar.