Lot 01057

“ΘΕΣΣΑΛΟΝΙΚΗ*10.VII.31” first flight cover to “ΑΘΗΝΑΙ*10.VII.31” by EEES with air-cachet type 16b in blue and type 22A in violet, with commemorative canc. “ΕΝΑΡΞΙΣ ΑΕΡΟΠ. ΣΥΓΚΟΙΝΩΝΙΩΝ ΑΘΗΝΩΝ-ΘΕΣΣΑΛΟΝΙΚΗΣ” in blue, (Hellas FF173).