13 mm spread SHEET MARGIN 3 Kr. below on deep blue in the horizontal strip of three with complete when correctly stamped 9 Kr. postage paid on mail organization cover with Vierringstempel "220" together with K2 "FRANKFURT 7 MAY 1855" to Erfurt/Prussia, back travelling post office Ra3 "EISENACH REVERBERATION" and version cancel of 5-9-1855, complete contents of cover. The unity got crafty instead of imperforated which, touched. Small crease of the cover con stamp vertically. A second cab stamp unity with 13 mm of a wide sheet margin on cover isn't known! Units are unusual and rare certificate Sem BPP (11/2010) " with such wide sheet margins. One quite impressive document ".