3 Reich - Prague prison - Czech prisoner 1941

3 Reich - Prague prison - Czech prisoner 1941
Rare letter sent by Czech prisoner in German prison in Prag in 1941. Written on both sides in Czech, it has some guidelines written in German, such as: it's strictly forbidden to send tobacco of any type, food or packets not only in envelopes, but also during visits. The detainees can only send 1 letter every 4 weeks.Condition is excellent.