1870 - BALLON MONTE - ARMAND BARBES - Light paper letter from "PARIS R. ST. LAZARE 4 OCT 70", franked 60c with a blue 20c blue and an orange 40c (Ceres n.29+31) to Prague. Black transit datestamp "WIEN 19 10" at the back. Cover transported by the "Armand Barbes" (P). Extremely fine, rare destination (Maury € 3.750 to Austria, Lheritier to Prague € 11.500)