6 Pfg with variety black numeral of value and 12 Pfg, always two values in the unperforated vertical se-tenant strip, the lower stamps minimal gum adhesions, otherwise in perfect condition mint never hinged, extreme scarce and decorative unit, so far first 2 pieces known, new photo expertize Kunz BPP (2018) "the mint never hinged vertical upper margin strip of four is genuine and except for slight gum adhesions to the both lower stamps in perfect condition. "