1858 two outer FLs, one franked with 10c green, sent from Rosario de Santa De Santafe to Cordoba, the other with 5c dark carmine, sent to Valparaiso, fine, cat. $1300 (Cat No. 2, 14) (Image)

Cat. $1300, Est.$250

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.$5,000

1930 cover franked with the complete set of blue Zeppelin overprints, tied by Buenos Aires cds on cacheted and flown to Germany, some toning and wrinkles, with Friedrichshafen arrival (Cat No. C20-24) (Image)

Est.$250

1930 cover franked with the complete set of green Zeppelin overprints, tied by Buenos Aires cds on cacheted cover addressed to USA, small faults, fine appearance. The complete set of green overprints is scarce on one cover (Si. Euro 3,300) (Cat No. C25-29) (Image)

Est.$500