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Los 1344

FIELD POST OFFICE "POCZTA POLOWA N°37": Postal stationery reply card 15 h. green, used with cds. "LWOW" to Osowiec, adjacent cds. "FRONTOWA POCZTA POLOWA N°37 26 IX 1919", repeated on reverse; fine, scarce mail from the Polish-Byelorussian front