This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Kolkov znmka. Ks kolkov znmka roku Czech republic own cs User Pernak PDCzechGov PDold stamps Revenue stamps of the Czechoslovak Republic Stamps to be categorised by subject in Czechoslovakia
Page 2023 Free-images.com. All images are Public Domain