... A Czechoslovakian CW QSL.


WD5HRC worked OK1AES April 27th 1980, on 20 meter CW at 0435Z.

OK1AES belonged to a club station: OK1KPU, which developed this nice design.

Czechoslovakia belonged to the 'Soviet bloc' of Eastern European nations.
Czechosolvakia is now two countries: the Czech Republic, and Slovakia.
Quite a lot has changed since 1980, hasn't it?