Polish WWII bayonet frog.
Polish WWII bayonet frog for the model M1922/24/28/29. A rare Polish wartime made bayonet frog. Dark brown leather front stitched and riveted to a black ribbed cloth back part. The back is also vertical stitched with 4 lines of black cotton. No markings.
A somewhat similar frog is described by Anthony carter as AC 380 -381