|Complete set of 12 mini coins, each is 3/4" in diameter. The set is housed in a solid mahogany display box, and has a brass nameplate entitled AMERICA'S TRIUMPHS IN SPACE GOLD MEDAL COLLECTION by THE DANBURY MINT. Each coin is stamped '14 KT. GOLD' on the reverse and is dated 1979. The coins were issued to celebrate the history of space exploration in America, and were a limited edition. Each coin weighs 2.5 to 2.7 grams. The complete set weighs about 33 grams.