Some of may have seen them. In the WW2, there were issued overprinted stamps on "Adolf" and others immediately after getting freedom by red and Allied army. Every postman made his own print and than overprinted the stamps of Protectorate of Bohemia and Moravia. Here are some examples.
Bludov

Bruntál

Frýdek

Hodonín

Planá

Protivín

Milevsko (type 2)
