not issued: 20 on 5 Kopecks - 60 on 30 Kopecks workers, Michel number VI in variety F with "box overprint from left at the bottom to the right above", this value unused with original gum and in the lower perforation is the left part a little shortened, Michel number VII - X are mint never hinged in issue typical perforation, very fine, these prepared however through prohibition from 18.10.1941 not to the issue arrived stamps are extremely rare! signed Dr. Rommerskirchen et alia and photo expertize Walter Zirath BPP (2025) " . there are only a few stamps known.