1921, Kosciuszko and Mickiewicz 20 m. tied by cds. "WILNO -3 10 21" to request of an enquiry for a registered letter with adjacent cds. "SOPOCKINIE 24.X.21", folded in the middle and punched at right, stamp with few imperfections of virtual no importance, a very attractive and unique usage, signed Korzsen and Petriuk PZF with the latters certificate (2021)
