Topic: PZPR (The Polish United Workers' Party)

The following Polish postage issues commemorate meetings and anniversaries of the PZPR:

Fischer 945-947 - 3rd PZPR meeting in 1959
Fischer 1351-1354 - 4th PZPR meeting in 1964
Fischer 1735-1737 - 5th PZPR meeting in 1968
Fischer 1977-1984 - 6th PZPR meeting in 1971
Sheet 42 - 6th PZPR meeting in 1971
Fischer 2141 - 25th PZPR anniversary in 1973
Fischer 2272-2273 - 7th PZPR meeting in 1975
Fischer 2450 - 30th PZPR anniversary in 1978
Fischer 2524-2525 - 8th PZPR meeting in 1980
Fischer 2887 - 10th PZPR meeting in 1986
Fischer 3034 - 40th PZPR anniversary in 1988