Lot
2738 
France, Airmail, 1928, 10fr on 1.50fr "Ile de France". Bottom margin single in combination with 1fr + 50c Sower issue pairs, all tied by "New York Au Havre, 23-8, 28" First Day of Issue octagon cds's on registered flight cover to New York, catapult hydroplane cachet and registry etiquette below, receiving backstamps and "French Line" imprint on backflap, Very Fine and choice, a rare first day of this provisional surcharge airmail issued specially for this catapult flight. Maury No. 4. Scott No. C4 Estimate $3,000 - 4,000.