1909/38, comprehensive holding with focus on the early air-mail incl. balloon post with better flights, picture postcards and vignettes, in addition good part air-mail Rhine/Main with better postage paid (i.a. multiple Mi.-Nr. IV as well as Mi.-Nr. V and twice No. VI on special cards) and "Halbamtliche Flugpostmarken" with i.a. Mi.-Nr. 5, 9 (over 20x) and 10 on air-mail stamps, better often signed resp. with certificates, the condition is partly defective, often in good condition
