Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Italy - 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