Lot no. 9803

Private double rate letter with 2 copies lauré 20 c. with adjacent clear "PARIS PL. DE LA MADELEINE 18 SEPT." to Grenade sur l'Adour with clear arrival mark of September 25, then re-directed to Vielda. Private letters from the Neptune are of greatest rarity due to the enormous demand for letters to be carried and the limited space, highly important official mail and very light letters were carried on this first flight. This is the only recorded double rate letter of the 'NEPTUNE' a delightful cover and one of very few double rate letters of any Ballon Monté flights. Certificates Robineau (2004) and Brun (2004)