Okinawa International Ocean Exposition EXPO '75 Commemorative Medal Set (3 types with case) [Held in 1975]

This is a 3-piece commemorative medal set from the 1975 Okinawa International Ocean Exposition (EXPO '75).

* Contents: A set of three medals: gold, silver, and bronze.
* Material: Made of cupronickel (copper alloy) with gold and silver plating on the surface.
* Design: The medals feature designs such as a mermaid playing a flute and coral reefs.
* Condition: A collector's item presented in a plastic case.

Thank you.