1926, Umberto Nobile Trans-Polar Expedition, group of five perforated (pair) and imperforated labels, as well as imperforated proof without colors on the Globe (light blue and light beige), all except proof with official seal on reverse, full OG (one has slight foxing), NH, VF, Est. $200 -$250 (Image)

1933, General Balbo Trans-Atlantic Flight issue, 5.25L +19.75L and 5.25L+44.75L, complete set of two triptychs in sheets of 20, the second one has some separation on the left, fresh quality unit without usual toning, full OG, NH, VF and scarce multiples, Sassone #S1509, €17,625, Est. $4,000-$5,000 (Image)

1934 (October 31), Experimental Airmail Rocket Flight three covers from Trieste, franked by one or two stamps of Military Medal of Valor, all addressed to Germany, each one is bearing two specially produced triangle stamps of 5L and 7.70L, two covers have Thulendorf backstamps, in addition two triangles cancelled on individual pieces, mostly VF, Est. $150-$200 (Image)