Special stamp booklets 6 dfbz II13, cancel with two lines and handwritten change of contribution in black on cover side 1, content Michel number 1916, mint never hinged, rare, Richter 480.- booklet with postmarks and changes in contributions were from booklet the mostly qualitatively inferior waren produced, due to the qualitative restrictions received these therefore stamp or handwritten entries, they were on the Post offices and Rügen and on postal offices the National people's Army sold.