1921, 60 penny on 40 C. (type I), 80 penny on 45 C. and 1 Mark on 50 C. airmail as well 20 penny on 25 C. postal stamp on R airmail form letter "KNIGHTS OF COLUMBUS. . . " (the using up) from Memel 9.7.21 to Berlin, not transported with paper remnants left from label the post monitoring place Königsberg, small margin traces, in fact rare commercial letter with this Frankaturb