This is the official set, struck by the U. S. Mint, and commissioned by the Smithsonian for the Bicentennial. The medals are 38 mm in diameter, same size as a silver dollar. They are PEWTER, not silver. Perfect condition, in original packaging, as distributed by the Mint some 40 years ago. Shipped ONLY to the United States. Price, $75 for the set, includes insured shipping. Also included is a 43-page booklet, describing the history of the medals in great historical detail. Scans show the medals, the book, and the front cover of the album they're housed in.