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Town Mail Wilna: 1917, DP Polen Germania 40 pfg. tied by cds. “OSTROW (GOUV. LOMZA) 9.8.” to express cover with censor mark “P.Ü.St. Geprüft Nr.5” and “B” (Bialystok) to Vilnius with delivery mark “GEBÜHR 10 PF.”, cover vertical fold and shortened at right, signed Petriuk PZF
