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.
Keywords from Image Description:
Slovakia stamps. The mentioned author is not the author itself but only the uploader The licence of the postage stamps of the Slovak State could be the same like in Czechoslovakia years post mortum of the author jkb talk November UTC Postage stamps of Slovakia selfmade scan of Slovakian stamps by Kiejstut First Slovak Republic