1912 Bork-Bruck vignette, franked with 3pf Deutsches Reich, perf. "G.R." and cancelled Bruck 5.3.12, addressed to Berlin, with appropriate "Flugpost Bork und Umgegend durch Gradeflieger" hs, filing fold away from the stamp, fine, cat. €2800 (Cat No. Mi.1A) (Image)

Cat. €2800, Est.$750

1924 Carrier Pigeon, 5pf-300pf, set of seven, bottom sheet margin and imprint horizontal pairs, n.h. and post office fresh, v.f. (Mi.344-350) cat. €3000 (Cat No. C20-26) (Image)

Cat. €3000, Est.$750

1926-27 German Eagle, 5pf-3m, complete set of eight sheet corner margin blocks of four, n.h. and post office fresh, v.f. (Mi.378-384) cat. €4800 (Cat No. C27-34) (Image)

Cat. €4800, Est.$1,500