In 2016 to celebrate the 50th Anniversary of Gene Roddenberry's Star Trek, the Perth Mint on behalf of the issuing country of Tuvalu released a very Limited Issue Star Trek Delta Shaped $1 One Dollar Silver Proof Coin struck in solid fine .999 Silver and weighing one ounce of pure Silver.
The reverse design features a Delta Shape while the obverse bears the elegant portrait of Her Majesty Queen Elizabeth II by Ian Rank Broadley.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.