45 Heller imperial yacht unperforated, impeccable mint never hinged outstanding quality from upper right corner (in the margin defects), stamp without any signatures, photo expertize Steuer VOeB: \"mint never hinged, qualitatively perfect, unsigned\", Michel 2.000.- - very rare! Issued only 100 pieces (a sheet), the 1997 public war auctioned, in many collections missing stamp!