German Hitler Stamps

More of my great great great uncle's stamp collection. I doubt these are worth something, but they at least have some historical significance. German postage stamps with Adolf Hitler on them, post marked in 1943, the middle of the war. I am not sure how he came to acquire these. I do not know a whole lot about him, he passed away when my father was 16, and he was an uncle by marriage. His name was Koerner and he was born in the 1880s, so I suppose it is possible that he had family in Germany.