18th Congress of the Trade Unions of the USSR, participant's badge, 1987.
Brass, "cold" enamel; 25.0 mm tall (incl. flagpole finial) x 35.2 mm wide. Two-piece construction: the bas-relief of Lenin is a separate superimposed part attached by rivets. Late style circular logo of the Moscow Mint to the reverse. Very nice quality badge, similar to that of CPSU congresses. Excellent condition.
The 18th Congress was the last congress of the Soviet Trade Unions due to the collapse of the USSR four years later. Its delegate badges are relatively scarce compared to most of the earlier issues.