GERMANY #377, C31 & C36 tied by March 22, 1932 Graf Zeppelin pmks to 1932 South America Flight cacheted cover to Recife, Brazil w/ March 23, 1932 receiving pmk on reverse (Image)

Est. $100-150 SE

GERMANY (9) 1936 Hindenburg covers, all but one w/ North America flight cachets (Image)

Est. $150-200 LE

GERMANY Chicago flight cover w/ Germany C43-44, Friedrichshafen to Akron (Sieger 238Bba €375), flight cachet & registration label, F-VF+ (Image)

Est. $200-250 SE

GERMANY Chicago flight w/ Germany C42 (2) plus C28-29, C31 (Scott CV $808), Friedrichshafen to Chicago, proper flight cachet, F-VF (Sieger 238Bca var) (Image)

Est. $250-300 SE

Group Zepp or related covers, incl Germany (21), USA (8), Brazil cover & front, and Spain 1930 flight; Germany mostly Hindenburg but also Orientfahrt & 1929 4m cover to Tokio, USS Akron, etc; F+ several w/ envelope & gum toning (Image)

Est. $100-150 SE

(11) covers, incl Sieger #109Aa Magdeburg; 122 England flight from Liechtenstein; 408A/B Liechtenstein flight w/ both 1fr & 2fr, 456 Sudentenland flight card; (2) 1936 Hindenburg flights to US, one w/ 6¢ postage due; then (5) diff Century of Progress routes w/ C18: 242A, 242B, 242C, 243A & 244C; total Sieger value €1365, some minor faults, gen F-VF (Image)

Est. $225-275 SE

(76) Zeppelin or related covers, incl Liechtenstein C16 Hindenburg cover; Danzig C31-35 air show pmk, show label (not Zepp); (2) Switz 1929 Catapult & 1932 DO-X to Saigon; (3) Spain Sieger #58Ab, 58Ad, 58B; (11) USA incl 1928-29 Zepp, Akron, Bremen Catapult; (13) Brazil Zepp, airmail or DO-X, incl pair C29 & 1CL10-12 on Condor first flight; (41) Germany incl (2) CL1-2 cards Zepp & Hindenburg (3 w/ C37), DO-X & Bremen, var of frankings; plus a few reg airmails from period; gen F+ (Image)

Est. $250-350 B