Topic: Silesian Uprisings

The following Polish postage issues commemorate the Silesian Uprising(s) of 1919, 1920 and/or 1921:

Fischer 404 (25th anniversary of the three Silesian Uprisings in 1946)
Fischer 1115-1116 (40th anniversary of the 3rd Silesian Uprising in 1961)
Fischer 1629 (monument for the three Silesian Uprisings in 1967)
Fischer 1931 (50th anniversary of the 3rd Silesian Uprising in 1971)
Fischer sheet 40 (50th anniversary of the three Silesian Uprisings in 1971)
Fischer 2579 (60th anniversary of the Silesian Uprisings in 1981)
Fischer 3438 (75th anniversary of the 3rd Silesian Uprising in 1996)