1921, 10 Pfg yellowish orange plus gap with HAN "H 7592.20" plus 10 Pfg yellowish orange ( = se-tenant from the stamp booklet panes 29 and 31, MH Germania 1921), 10 Pfg red carmine horizontal strip of four ( = tete-beche from MHB 1-5, MH Germania 1921), 10 Pfg orange winged posthorn airmail issue 1919 two single stamps on properly franked letter to Potsdam, ZKr BREMERHAVEN -6.5.22.9-10 N * * *, time typical traces of age and usage