Special stamp booklets 6 dfbz II16, cancel with two lines and handwritten change of contribution in red on cover side 1, content Michel number 2486, 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 cancel or handwritten entries, they were on the Post offices and Ruegen and on postal offices the National people's Army sold.