50 Dollars - Elizabeth II Tennis Champions

Niue's early commemorative program in the late 1980s leaned heavily on licensing arrangements that allowed the tiny Pacific island territory to generate revenue through collector coins bearing international sports and entertainment themes — a strategy pioneered by several small island nations with negligible domestic coin demand. This tennis series was issued the same year Steffi Graf won the Grand Slam and the Seoul Olympic gold, though whether the timing was deliberate marketing or coincidence is unrecorded.

The .625 silver fineness is notably low for a collector issue of this period, when .925 was the near-universal standard.