50 Heller delivery stamp vivid magenta with overprint "Karlovy Vary 1. X. 1938 plus swastika" in the tete-beche pair with margin of sheet, with cancellation adjusted date stamp Karlovy Vary 1 4. X. 38 4 d on faultless letter piece, issued only 232 examples, unsigned, photo expertize Robert Brunel VP (2026) "the condition is perfect. tete-beche pair rare", Michel 2000.-