1944, Danes in of the Armed Forces, airmail SS fieldpost letter with horizontal pair the airmail approval stamp rouletted with Standard stamp "b16. 2. 44" as well on the back senders note of a danish SS-Rottenführers with fieldpost number "40670 D" ( = rod I and 1. 4. company, 24. armored / armoured infantryman regiment, 11. SS-Division) to Denmark, verso SS fieldpost censorship fastener slip of paper and red censorship stamp "2", cover at the bottom with closed document punching, otherwise fine commercial usage!