Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Vatican City - 1931 (January 15-16), Special Flight to Tripoli, Balbo card (produced for prospective Trans-Atlantic flights), mixed franking of Vatican City 30c dark blue on yellow network and Italian Virgil 50c brown, Italy-Brazil etiquette in blue and gold tied by Tripoli ''16.1.31'' arrival ds, VF, 70 items were delivered by this flight, Est. $150-$200, Scott #5