EL cover from Corfu to Taganrog (Russia) endorsed "Via Costantinopoli" franked with 40 lep. mauve on blue and cancelled with numeral "106" and "ΚΕΡΚΥΡΑ 20 ΣΕΠΤ 70" corresponding cds, red "P.D." and "OΔECCA" transit. Plus "TAGANROG" arrival (Hellas 28b)