3 Reich very small prison in Sieradz 1941

3 Reich very small prison in Sieradz 1941
Rare postcard sent by relatives to a prisoner in Sieradz prison, dated 1941. In this postcard, fully written and with stamp still glued, we can read that his mother tells her son, the prisoner, that they didn't receive any answer to their last postcard. She asks him if he's healthy and what's up in prison. Very good condition.