Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Italy - 1930, Trans-Atlantic Squadron, 7.70L deep blue and gray, bottom left corner sheet margin block of four, printer's sign on selvage at lower left, perfectly centered and post office fresh, full OG, NH, VF and rare, each stamp has A. Bolaffi guarantee hs and signed by him in pencil, C.v. $3,600++, Sassone #PA25, C.v. €5,500, Est. $2,000-$2500, Scott #C27