1863, Folded envelope cancelled CONSTANTINOPLE 31/8 in blue (Tchilinghirian fig. 387) and FRANCO alongside, endorsed 'via Kustendje' (Constanza), sender cachet ‘Freres Simoff Constantinople’. The route of the cover is very interesting, from Constantinople by Lloyd ship to Kustendje, per Danube and black sea railway DBSR to Cernowoda and by DDSG to Roustschouk, file folds and tiny toned, otherwise fine. Nice postal history.