This limited edition proof set of commemorative solid sterling silver ingots began it's issue in 1975. I only collected the first 15 of 100 issued. Even though this collection is not complete it is still an elegant set to have and display. Each ingot represents a very signficant event in American history starting with The Declaration of Independence. This set is an officially recognized commemorative of The American Revolution Bicentennial Administration. Includes a beautiful hand crafted hardwood and leather display case, certificate of authenticity and leather bound album of historical descriptions of each ingot. Each ingot measures 2 1/4" x 1 1/2" x 1/8"