12+38 Pfg centenary Koch, horizontal strip of three, along with 6 Pfg Hitler on correctly franked registered letter from Bad Homburg, tied by violet one-line cancel "emergency post office" from 15.5.44 (handwritten) to Aschaffenburg with arrival postmark, in perfect condition, rare document of the driving emergency post office, which to the use came about destroyed post offices to make up for, photo expertize H. G. Schlegel BPP "the letter was correctly franked franked and over the postal route transported. "