A nice piece. Unger's version
Unsigned nut. Version not included in the Sawicki and Wielechowski catalog.
Post secondarily soldered.
Face: cross with rays between the arms, central medallion with the national eagle, on the arms of the cross:
DOW/W.P.-WSCH/1918/1919;
Preservation condition of the object good.
Brass, dimensions 34.5 x 34.5 mm.