The Star Trek TNG 5th Anniversary Sterling Silver Medal from 1987-1992 is a stunning collectible piece. This round medal weighs 6.35 oz and is composed of 0.950 fine silver, making it both valuable and beautiful . Minted by Franklin Mint in 1991, this limited edition piece is from my late brother in laws cherished Star Trek collection. All proceeds go to his niece and nephews educational fund.