Poland
People's Republic of Poland (1952-1989) - Warsaw Mint
medal designed by Jerzy Jarnuszkiewicz, Av: Coat of arms of the city, on its sides 1271-1971, Rw: Horizontal inscription, on the edge convex inscription TRIBUS TRES EX CAUSIS
patinated tombac, 45.4 x 45.3 mm, 125.93 g, edition of 500 pieces