Airmail, 1918, 6¢ orange (Scott C1), near perfect centering, bright fresh color, o.g., very lightly hinged, Extremely Fine and choice, with 2017 P.S.E. certificate graded XF 90. SMQ $90. Scott $55
Est. $60-80 (Image)

Scott $55
Est. $60-80

Airmail, 1918, 16¢ green (Scott C2), gem centering that is just about perfect, a beauty! o.g., lightly hinged, Extremely Fine to Superb, with 2017 P.S.E. certificate graded XF-SUP 95. SMQ $150. Scott $60
Est. $100-150 (Image)

Scott $60
Est. $100-150

Airmail, 1923, 8¢ dark green (Scott C4), mathematically perfect centering within ample margins, o.g., never hinged, Extremely Fine to Superb. Scott $35
Est. $60-80 (Image)

Scott $35
Est. $60-80

Airmail, 1923, 16¢ dark blue (Scott C5), plate number single, a magnificent gem example, most impressive, o.g., never hinged, Extremely Fine and choice. Scott $120
Est. $150-200 (Image)

Scott $120
Est. $150-200

Airmail, 1926, 10¢ Map & Planes (Scott C7), immaculate and perfectly centered, o.g., never hinged, Extremely Fine to Superb. Est. $30-40 (Image)

Est. $30-40

Airmail, 1930, 65¢ Graf Zeppelin (Scott C13), nicely centered and with a lovely c.d.s., almost Very Fine. Scott $150
Est. $75-100 (Image)

Scott $150
Est. $75-100

Airmail, 1931, 5¢ Winged Globe, rotary (Scott C16), a perfectly centered gem, immaculate, o.g., never hinged, Extremely Fine and choice, with P.S.E. certificate (encapsulated) graded XF 90. SMQ $85. Est. $60-80 (Image)

Est. $60-80

Airmail, 1931, 5¢ Winged Globe, rotary (Scott C16), plate block of 4, an outstandingly choice plate block, o.g., never hinged, Extremely Fine. Scott $95
Est. $60-80 (Image)

Scott $95
Est. $60-80

Airmail, 1932, 8¢ Winged Globe (Scott C17), plate block of 4, perfect in every respect, o.g., never hinged, Extremely Fine to Superb. Scott $38
Est. $40-60 (Image)

Scott $38
Est. $40-60

Airmail, 1933, 50¢ "Chicago" Zeppelin (Scott C18), beautifully well centered within large margins, o.g., never hinged, Extremely Fine to Superb. Scott $75
Est. $75-100 (Image)

Scott $75
Est. $75-100

Airmail, 1934, 6¢ Winged Globe (Scott C19), almost perfectly centered, rarely seen this nice, o.g., never hinged, Extremely Fine. Est. $30-40 (Image)

Est. $30-40

Airmail, 1947, 10¢ Pan-American Building (Scott C34), an exceptionally choice example, o.g., never hinged, Extremely Fine to Superb. Est. $20-30 (Image)

Est. $20-30