1912 Regensburg, set of three, usual irregular perforations, 20pf with short perf. and slight edge toning, heavy h.r., one 10pf with album page adherence on gum, fine-v.f. and rare complete set, signed Oertel, with 1999 Sieger certificate, cat. €4200 (Cat No. Mi.6-8) (Image)

Cat. €4200, Est.$1,500

1924 Carrier Pigeon, complete set, n.h., fine-v.f., cat. $1130 (Cat No. C20-26) (Image)

Cat. $1130, Est.$300

1926 legal size cover franked with 2x10pf, 40pf and 100pf, used in combination with 2x30c & 3x1p SCADTA, overprinted "A" (Germany), flown via Barranquilla to Bogot , fine, with various transit and arrival postmarks (Image)

Est.$200

1926-27 German Eagle, complete set, n.h., fine-v.f., cat. $967 (Cat No. C27-34) (Image)

Cat. $967, Est.$300

1931 Polar Flight, set of three, n.h., 2m slightly disturbed gum, signed Schlegel (little higher), Peschl, fine-v.f., cat. $3200 (Cat No. C40-42) (Image)

Cat. $3200, Est.$1,000

1933 Chicago Flight, set of three, n.h., slightly dried or disturbed gum (natural gum skips), fresh and v.f., cat. $3200 (Cat No. C43-45) (Image)

Cat. $3200, Est.$1,000

1933 Chicago Flight, 1m carmine, used in combination with 50pf German Eagle on cover from Friedrichshafen to Brazil, v.f., cat. $450 (Cat No. C43) (Image)

Cat. $450, Est.$200

1934 Zeppelin, etc., complete set n.h., fine-v.f., cat. $600 (Cat No. C46-56) (Image)

Cat. $600, Est.$150

1934 Zeppelin, etc., complete set n.h., fine-v.f., cat. $600 (Cat No. C46-56) (Image)

Cat. $600, Est.$150

1934 Zeppelin, etc., complete set n.h., fine-v.f., cat. $600 (Cat No. C46-56) (Image)

Cat. $600, Est.$150