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 C15, 1930 $2.60 Blue,o.g., Very Fine (Scott $575) H.R. Harmer, Jun 2015, Sale 3007, Lot 3455  | 
US$290.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin (Scott C15), o.g., lightly hinged, sound and attractive stamp with vivid color, Fine. Scott $575. Estimate $300 – 400. Daniel Kelleher Auctions, May 2015, Sale 669, Lot 3253  | 
US$275.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin (Scott C15), o.g., never hinged, Post Office fresh and choice, a very pleasing example of this stamp, Very Fine, 2008 P.S.E. certificate graded VF-80. SMQ $975. Scott $975. Estimate value $750 – 1,000. Daniel Kelleher Auctions, May 2015, Sale 669, Lot 3252  | 
US$650.00 | 
 
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 $2.60 Graf Zeppelin (Scott C15). Top plate no. 20092 block of six, lightly hinged where few perf separations expertly reinforced, light natural gum creases, Fine-Very Fine Robert Siegel Auction Galleries, Apr 2015, Sale 1096, Lot 825  | 
US$2,200.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin. O.g., never hinged, perfect centering amid large evenly balanced margins, deep rich color on bright paper, Extremely Fine to Superb, a gem Zepp high value. Scott No. C15; $975. Schuyler J. Rumsey Philatelic Auctions, Apr 2015, Sale 60, Lot 2483  | 
US$1,100.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin. O.g., never hinged, choice centering with nicely balanced margins, rich color, fresh and Extremely Fine, with 2011 P.S.A.G. Graded certificate (90, SSV $1,200). Scott No. C15; $975. Schuyler J. Rumsey Philatelic Auctions, Apr 2015, Sale 60, Lot 2484  | 
US$1,100.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin. Bottom margin plate “20090” block of 6, o.g., never hinged (some small gum skips), attractively centered, deep bold color on fresh paper, Very Fine and choice. Scott No. C15; $8,750. A HANDSOME NEVER HINGED PLATE BLOCK OF THE $2.60 GRAF ZEPPELIN ISSUE. Schuyler J. Rumsey Philatelic Auctions, Apr 2015, Sale 60, Lot 3006  | 
US$4,000.00 | 
 
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 United States – Air Post 1930 $2.60 blue, n.h., very faint gum toning, otherwise v.f., with clear 2001 APS cert. Cherrystone Auctions, Mar 2015, Sale 201503, Lot 77  | 
US$375.00 | 
 
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 $2.60 Graf Zeppelin (Scott C15). Mint N.H., with right plate no. selvage, rich color on bright paper, Extremely Fine Gem, with 2008 P.S.E. certificate (XF-Superb 95; SMQ value $1,750.00) Robert Siegel Auction Galleries, Feb 2015, Sale 1092, Lot 1416  | 
US$1,500.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin (Scott C15), bottom plate number single, o.g., never hinged, impeccably fresh example with the deepest and richest color imaginable, a beautifully centered top quality stamp for the most discerning collector; two perforation thins – truly trivial, otherwise Extremely Fine, 2014 P.S.E. certificate. Scott $975. Estimate price $500 – 750. Daniel Kelleher Auctions, Jan 2015, Sale 663, Lot 2076  | 
US$500.00 | 
 
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 Airmail, 1930, $2.60 Graf Zeppelin (Scott C15), o.g., lightly hinged, Very Fine. Scott $575. Estimate value $300 – 400. Daniel Kelleher Auctions, Jan 2015, Sale 663, Lot 2077  | 
US$400.00 | 
 
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 United States – Air Post 1930 $2.60 blue, v.f., used on flown 1930 Zeppelin cover with appropriate markings Cherrystone Auctions, Jan 2015, Sale 201501, Lot 196  | 
US$400.00 | 
 
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 USA (Scott C15) 1930 ZEPPELIN $2.60 BLUE Very fine and quite pretty example with generous margins all around. MINT never hinged. (2011 PSE Cert #01243989) Cat price $975. Regency-Superior, Jan 2015, Sale 109, Lot 1430  | 
US$550.00 | 
 
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 $2.60 Graf Zeppelin (Scott C15). Mint N.H., plate no. 20090 bottom selvage, well-centered, rich color, a few minor gum skips, Very Fine Robert Siegel Auction Galleries, Dec 2014, Sale 1090, Lot 1616  | 
US$550.00 | 
 
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 $2.60 Graf Zeppelin (Scott C15). Mint N.H., Jumbo margins and exceptionally well-centered, post-office fresh, couple typical gum bends and tiny skips, Extremely Fine Gem, with 2010 P.S.E. certificate (XF-Superb 95 Jumbo; SMQ $1,750.00 as 95, $4,250.00 as 98) Robert Siegel Auction Galleries, Dec 2014, Sale 1090, Lot 1615  | 
US$1,600.00 |