10 Heller national coat of arms with inverted overprint "Karlovy Vary 1. X. 1938 plus swastika", in conjunction with normal stamp as well 20 and 2 x30 Heller national coat of arms with normal overprint on blank cover with adapted date cancel's Karlovy Vary 4. X. 38, sound, unsigned, photo expertize Brunel VP (2014) "the condition is perfect. the stamp with inverted overprint is extremely rare. used lay so far only another, Lot copy before. ", Michel 1200.- plus