1, 50 Kc postal stamp with bright blue green overprint "Karlovy Vary 1. X. 1938 ++ swastika", tied by cancellation adjusted date stamp "Karlovy Vary 4. X. 38" on letter piece, faultless condition, the imprint stamp was near the change the overprint color insufficient cleaned - therefore appears the overprint by of this stamp bluish, issued only 210 examples, photo expertize Brunel VP (2020) : "the condition is perfect. ", Michel 180.-