U.S., Airmail, 1918, 24¢ Carmine Rose & Blue, Plate # Block of 8, #C3, n.h. (stamps), top #8493, 8492, gum bends, Fine to Very Fine.
Scott $1,040+.
Estimate $250-300. (Image)

Est. $250.00-300.00

U.S., Airmail, 1918, 24¢ Carmine Rose & Blue, Plate Block of 12, #C3, top #s 8493, 8492, l.h., adhesives n.h., few gum skips and gum bends.
Scott $1,560 + (n.h. singles).
Estimate $400-500. (Image)

Est. $400.00-500.00

U.S., Airmail, 1923, 8¢ Dark Green, Top Plate Block of 6, #C4, n.h., Fine to Very Fine.
Scott $330.
Estimate $100-150. (Image)

Est. $100.00-150.00

U.S., Airmail, 1923, 8¢ Dark Green, Bottom Plate Block of 10, #C4, n.h., tiny gum skips, Fine to Very Fine.
Scott $470.
Estimate $150-200. (Image)

Est. $150.00-200.00

U.S., Airmail, 1923, 8¢, 16¢ First Day Covers, #C4-C5, both sound and clean, Very Fine.
Scott $1,000.
Estimate $250-300. (Image)

Est. $250.00-300.00

U.S., Airmail, 1923, 24¢ Carmine, Large Die Proof, #C6P1, reduced, measuring 111 x 97mm, black serial no. 70112 on reverse, immaculate and Very Fine.
Scott $4,750. Only 5 proofs were produced .
Estimate $2,000-2,400. (Image)

Est. $2,000.00-2,400.00

U.S., Airmail, 1923, 24¢ Carmine, #C6, n.h., 2019 P.S.E. cert. graded XF-SUP 95.
SMQ $250.
Estimate $100-140. (Image)

Est. $100.00-140.00

U.S., Airmail, 1923, 24¢ Carmine, Block of 4, #C6, n.h., Fine to Very Fine.
Scott $520.
Estimate $120-160. (Image)

Est. $120.00-160.00

U.S., Airmail, 1928, 10¢ Lindbergh, Booklet Pane on FDC, #C10a, Washington DC May 26 cancel to Toledo, Very Fine.
Scott $875.
Estimate $250-300. (Image)

Est. $250.00-300.00

U.S., Airmail, 1930, Graf Zeppelin Complete, #C13-C15, n.h., Fine to Very Fine.
Scott $1,750.
Estimate $700-900. (Image)

Est. $700.00-900.00

U.S., Airmail, 1930, Graf Zeppelin Complete, #C13-C15, n.h., 2007-2008 P.S.E. certs. graded VF 80.
SMQ $1,875.
Estimate $650-800. (Image)

Est. $650.00-800.00

U.S., Airmail, 1930, Graf Zeppelin Complete, #C13-C15, C13 n.h. small gum skips, C14-C15 o.g., C14 f.-v.f., C13 and C15 v.f. or better.
Scott $1,175.
Estimate $500-600. (Image)

Est. $500.00-600.00

U.S., Airmail, 1930, Graf Zeppelin Complete, Plate Blocks of 6, #C13-C15, n.h., all tops, all well centered and fresh, very nice set, Choice Very Fine.
Scott $15,200.
Estimate $7,500-8,500. (Image)

Est. $7,500.00-8,500.00

U.S., Airmail, 1930, Set Complete on Zeppelin Covers, #C13-C15, 39 incl. block of 4 C13 on two covers, pair C14 on cover, numerous C15's, and 9 C18's, mostly Fine to Very Fine.
Estimate $5,000-7,000. (Image)

Est. $5,000.00-7,000.00

U.S., Airmail, 1930, $1.30 Graf Zeppelin, #C14, n.h., 2019 P.S.E. cert. graded Gem 100.
SMQ $7,500, 9 known including this newly certified copy .
Estimate $3,000-4,000. (Image)

Est. $3,000.00-4,000.00

U.S., Airmail, 1930, $1.30 Graf Zeppelin on F.D.C., #C14, very fine tied by APR 19 cds on 1st flight to Mass., immaculate cover, Choice Very Fine.
Scott $900.
Estimate $350-450. (Image)

Est. $350.00-450.00

U.S., Airmail, 1930, $1.30, $2.60 on 11 Zeppelin Covers, #C14-C15, consists of $1.30 three singles on 3 covers, 2 pairs on 2 covers, and $2.60 six singles on 6 covers, one with Gorham cachet, Fine to Very Fine.
Estimate $2,000-2,500. (Image)

Est. $2,000.00-2,500.00

U.S., Airmail, 1930, $2.60 Graf Zeppelin, #C15, o.g., light gum crease upper right corner, otherwise Very Fine to Extremely Fine.
Scott $525.
Estimate $250-300. (Image)

Est. $250.00-300.00

U.S., Airmail, 1930, $2.60 on F.D.C., #C15, $2.60 very fine centered, tied by Apr 19 cds on 1st flight to Mass., immaculate cover, Very Fine.
Scott $1,000.
Estimate $450-550. (Image)

Est. $450.00-550.00

U.S., Airmail, 1930, $2.60 on Zeppelin Cover, #C15, light diagonal crease at left, tied by Apr 28, 1930 cancel, few spots, otherwise Fine to Very Fine.
Scott $575.
Estimate $200-250. (Image)

Est. $200.00-250.00

U.S., Pioneer Airmail Flights, 1935 First Flight Over Wake Island, AAMC #1228, large cover from Manila to Wake to Hawaii from USS Nitro Feb 26, 1935, with black cachet and receiver Fleet Air Base Honolulu, Mar 15, 1935, signed by Lt. J.G. Johnson (pilot), Fine to Very Fine, 125 known .
Estimate $150-200. (Image)

Est. $150.00-200.00