cover 1878 (20 Nov.) envelope (defective) to Cairo (same day arrival) bearing on reverse 1875 Bûlâq 5pa. pale brown block of eight comprising four vertical tête-bêche pairs, cancelled by three strikes of "POSTE KHEDEVIE EGIZIANE/ZAGAZIG" c.d.s. in blue; one vertical pair crossed by filing crease and with several other imperfections. A rare and impressive multiple franking. Photo