1910 Centenary of the Republic, 1/2c black & gray, 1c blue green & black, 2c olive & gray, 4c dark blue & green, 12c bright blue, 50c carmine & black, also 5p orange & violet, seven different, each with center inverted, well centered, generally lightly hinged, fresh, few pencil or Champion signed, v.f. This is the complete set of inverted centers from this issue, each in unusually nice condition (most of these errors were recovered from printer's waste and are usually "crumpled") (YT 148/61var, Euro 6,300) cat. $6200 (Cat No. 160a/173a) (Image)

Cat. $6200, Est.US$5,000

1930 Zeppelin Flight overprints in green, complete set of five, l.h. or h.r., fine-v.f., various handstamped guarantee marks, cat. $766 (Cat No. C25-29) (Image)

Cat. $766, Est.US$250

1927 (10 Oct) Paris-Buenos Aires Nonstop flight by Costes and Le Brix, franked with 1.50fr blue and 3fr Merson, tied by "Bourget-Aviation Seine" departure cds, Buenos Aires arrival (Oct. 20), with four-line handstamp at bottom left, v.f., rare (Cat No. AAMC 1063) (Image)

Est.US$750