The ion storm also caused their malicious counterparts to beam to the real starship. Kirk and the others must find a way home before they are discovered and exposed by their parallel crew members, who use treachery, back-stabbing and seduction to get what they want.

This superb proof coin features a colour image of mirror Spock and Spock prime facing each other as they appear in the Mirror, Mirror episode of Star Trek: The Original Series, against a backdrop of the planet Earth bisected by a sword. The design also includes Spock’s uniform insignia and The Perth Mint’s traditional ‘P’ mintmark.

Each coin is struck by The Perth Mint from 1oz of 99.99% pure silver in proof quality and issued as legal tender under the authority of the Government of Tuvalu. The obverse depicts the Ian Rank-Broadley effigy of Her Majesty Queen Elizabeth II, the monetary denomination, and the 2017 year-date.

The coin is housed in a Star Trek themed case which lights up when the lid is opened, within a Star Trek themed shipper. Each coin is accompanied by a numbered Certificate of Authenticity.