5 Mark black/lilac-red, line perforation 11 1/2, so-called preliminary type (frame with marginal portions of vignette design), unused; a few examples entered circulation in slightly different colours and perforation. According to BPP expert M. Jäschke-Lantelme, a spot on the back has been repaired and covered with a hinge, hardly significant given the stamp's absolute rarity. First offered at auction in 1980, major rarity and probably unique opportunity for the advanced Germany collector, photo certificates Gotwin Zenker VÖB and Jäschke-Lantelme BPP