1918, Germania 15 pfg. and 7½ pfg. tied by cds. "WARSZAWA 2.1.19" to registered cover addressed to the renowned Polish pianist, composer and in January 1919 Prime Minister of Poland at Hotel Bristol, 15 pfg. with plate flaw "lower standing I in POLSKA", fine and scarce entire, signed Petriuk PZF with certificate (2022)
