1926, Umberto Nobile Trans-Polar Expedition, group of four imperforated stamps, including horizontal pair without light beige color and a single without light beige and blue colors on the Globe, all with full OG, mostly VF, Est. $150-$200

100.00

1930, Trans-Atlantic Squadron, 7.70L deep blue and gray, four corner sheet margin blocks of four from a complete sheet of 50, absolutely excellent condition, full OG, NH, VF and rare assemblage for a serious air post collector, each stamp with Bolaffi guarantee hs and signed in pencil, C.v. $14,400 as singles, Sassone #A25, €22,000 without a premium for centering, Est. $7,000- $8,000

1930, Trans-Atlantic Squadron, 7.70L deep blue and gray, left sheet margin block of nine, stamp with "7 Stars" variety in the middle, folded once along horizontal perforation between 2nd and 3rd rows, perfect quality otherwise, full OG, NH, VF, rare and desirable positional piece, each stamp signed by A. Bollafi with his certificate, C.v. $11,200 as singles, Sassone #A25, a, €18,000, Est. $7,000-$8,000