A very nice set of 3 Ballons Montés. We start with an envelope entrusted to Washington, Douai postmarked October 10, 1870, arriving in St Sever on October 16, franked with 1n°29 "20c bleu lauré", Robineau certificate. We also have the "Vauban" postmarked "Paris-Auteuil" GC 241 and form (departure 10/26, arrival 11/2); and the "Colonel Charras", postmarked October 27 and arriving 11/2. Both franked with n°37 "20c siège de Paris".