Costs of US Stamps Scott Catalog C18 – 1933 50c Air Zeppelin Century of Progress Flight. Page 9

Airmail, 1933, 50¢ “Chicago” Zeppelin (C18), plate block of 6, fresh and beautifully centered, original gum, never hinged (all stamps with natural gum skips), Very Fine. Scott price $750

Matthew Bennett International, Mar 2011, Sale 337, Lot 3098

Airmail, 1933, 50¢ “Chicago” Zeppelin (C18), top margin plate no. block of six, original gum, never hinged, tiny paper inclusion lower left perf, Very Fine. Scott $750

Matthew Bennett International, Mar 2011, Sale 337, Lot 3099

UNITED STATES Air Post 1933 50c Century of Progress, four covers franked with a total of 17 stamps, including two blocks of four, flown Oct.2 and Oct. 4 from New York to Seville (2) and Friedrichshafen, fine-v.f.

Cherrystone Auctions, Feb 2011, Sale 201102, Lot 124

50c Chicago Zeppelin (Scott C18). Block of four with plate no. 21172, tied by New York N.Y. G.P.O. Oct. 2 1933 First Day grid duplex circular datestamps and U.S. German Sea Post S.S. Bremen 5 Oct. 1933 and oval grid duplex, used with 20c Map No. C9 (also tied), on round trip cover with “Bremen” Catapult Service as well (attractive green October 9 cachet), Fine, rare usage

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5099

50c Chicago Zeppelin (Scott C18). 18 stamps on six flown New York First Day Covers (Oct. 2, 1933), multiple frankings with pairs, four singles and two blocks of four, purple Century of Progress and red Round Trip Triangular cachets, two stamps lightly creased from overlap, generally Fine-Very Fine

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5105

50c Chicago Zeppelin (Scott C18). Two New York City First Day covers (Oct. 2, 1933), one sent Air Mail/Registered/Special Delivery to Kansas, stamp tied by mute double oval, nice range of markings, also incl. original Registry Receipt, other tied by “New York High Bridge Oct. 2, 1933” grid duplex, the cover border and cachet are by Ioor, Fine-Very Fine, scarce and attractive lot

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5104

50c Chicago Zeppelin (Scott C18). Twelve flown First Day Covers, four New York, two Akron, one Miami and five Chicago, purple or black Century of Progress cachets, four with red Round-Trip Triangles, two with printed cachets (Linprint and Ioor, Planty C18- 8 and 23), various legs of the flight, generally Fine-Very Fine

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5107

50c Chicago Zeppelin (Scott C18). Five covers, incl. Miami Oct. 6, 1933 First Day with faint Century of Progress cachet, “MISSENT” (did not make the flight, instead went by train, Ashfork & Los Ang. R.P.O. W.D. Tr.7 circular datestamp) to Los Angeles, block of four with plate no. 21172, Miami-Chicago, Miami Oct. 6, 1933 First Day flown to Chicago but no rubber stamp cachet and vertical pair with plate no. 21171 used with 10c Bicentennial on May 1934 “Europa” capapult cover carried aboard the Graf Zeppelin, also stained Miami-Chicago flown cover with “Chicago Air Mail” backstamp (not counted), Fine-Very Fine, scarce and most unusual lot of C18 covers

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5106

50c Chicago Zeppelin (Scott C18). Block of four, tied by New York Oct. 2, 1933 grid duplex on C. Stephen Anderson cacheted First Day Cover (Planty C18-4), Fine-Very Fine

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5101

50c Chicago Zeppelin (Scott C18). Three flown New York First Day Covers (Oct. 2, 1933), two with pairs, other pair and single, all signed by Dr. Eckener, same addressee, purple Century of Progress and red Triangular Round Trip cachets, pair on last some gum staining, also some light soiling, otherwise Fine lot

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5100

50c Chicago Zeppelin (Scott C18). Five New York Oct. 2, 1933 First Day Covers with Printed Cachets, incl. Rice, Hacker, Anderson and Aerophilatelic Club of New York (Planty C18-2-C18-4, C18-9 respectively), two of the Rice (one green and gold and scarcer blue and gold), the Aerophilatelic Club is on legal-size to Halifax, Nova Scotia and signed by the club president, Fine-Very Fine, nice lot

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5102

50c Chicago Zeppelin (Scott C18). Six mixed franking covers, incl. with Canal Zone 20c Air Post, six different Brazil stamps, three different Brazil stamps incl. “Zeppelin 3$500” surcharge tied by Rio de Janeiro Fair cachet (ex Belinkoff), two covers with single Spain 30c Carmine, all stamps tied by Seville six-sided circular datestamp (no other markings) and used with Germany 2m Chicago Flight and additional 75pf franking tied by Friedrichshafen (Bodensee) circular datestamps and red triangular cachet, bears blue Aerophilatelic Club handstamp cachet at bottom left (Planty C18-9, ex silver and Belinkoff), also incl. C18 and 15c Map C8 tied by U.S. German Sea Post Bremen Oct. 5, 1933 circular datestamp on catapult cover round trip through Pernambuco and Miami with Chicago and New York backstamp transits, somewhat mixed condition, scarce lot

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5119

50c Chicago Zeppelin (Scott C18). Unflown First Day Covers from New York, Akron, Washington, D.C. and Miami, first with some slight cover toning, otherwise Fine-Very Fine

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5109

50c Chicago Zeppelin (Scott C18). Three flown First Day Covers, New York, Miami and Chicago, usual handstamped cachets and all with Anderson printed cachets (Planty C18-4), different legs of the flight, same addressee, Fine-Very Fine

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5108

50c Chicago Zeppelin (Scott C18). Tied by Chicago Ill. Oct. 26 1933 circular datestamp and used in combination with Nicaragua horizontal pair 35c on 50c Brown, tied by light purple Oct. 18 Pan American Airways circular datestamp on cacheted flight cover to Germany (Sieger 245B), Very Fine

Robert Siegel Auction Galleries, Dec 2010, Sale 1003, Lot 5116