5 Heller postal stamp with dark-rosa overprint "Karlovy Vary 1. X. 1938 ++ swastika", tied by first day postmark" X Karlovy Vary 1 X / - 1. X. 38" on letter piece, perforation slightly spotted - otherwise perfect, issued only 164 examples - with first day postmark especially rare, by Michel still not even with placeholder listed - but rather unknown, expertise Brunel VP (2020) ;