Bearing a fine portrait of the skipper of the Deep Space 9 starship on the reverse, and struck to the finest Proof quality from a troy ounce of 99.9% pure silver, this exclusive crown-sized coin is clearly a must-have for any of the legion of Star Trek fans. Sure to catch the eye of anyone who admires the precious metal expertise of the Perth Mint, there would seem little doubt that the 2015 $1 Star Trek Sisko 1oz Silver Proof will be as popular as its predecessors. With most issues in the Mint’s Star Trek Series sold out, you should not miss the chance to add this coin to your collection.