1928, Île-de-France 10 fr. on 90 c., position 8, together with Sower 50 c. tied by hexagonal postmark “NEW-YORK AU HAVRE 23 - 8 28” to large piece with adjacent special 6-line “PREMIÈRE LIAISON POSTALE AÉRIENNE TRANSATLANTIQUE …” and catapult pilot Demougeot signature, very fine and rare thus, signed Bühler and certificate Scheller (2025)
