|The Young Astronaut Program was started during the Reagan Administration to promote the study of science, mathematics and engineering among young people in the United States. In 1988, a series of medals was produced by the U.S. Mint to commemorate the Young Astronaut Program. Medals were struck in gold, silver and bronze and of various sizes. The large 76mm diameter .999 fine silver medals weighing 6 troy ounces and 12 troy ounces are among the most scarce of the medals issued, with mintages of only 1,075 and 3,075 respectively. This listing is for a pair of the large-diameter silver medals which have been certified and includes the original wooden box of issue and certificates of authenticity. The 1988-P Thin Silver Young Astronauts Program 6 Ounce Medal has been graded MS69 by NGC and is encapsulated in their large-sized holder. The 1988-P Thick Silver Young Astronauts Program 12 Ounce Medal has been graded MS69 by NGC and is encapsulated in their large-sized holder. Both medals are 76mm in diameter, with the heavier medal just being twice as thick as the lighter piece. The obverse design features an astronaut with the American Flag on the surface of the Moon. The reverse design shows the eagle atop the Young Astronauts Program logo. The medals are very well struck and are in nearly perfect condition. The certificates are also individually numbered as #00658 and #02378. An excellent opportunity to obtain high-grade examples of these scarce Young Astronauts Program medals.