Socket form: tubular socket with broad raised rear reinforce and very wide attachment slot only very slightly offset. Screw adjustable locking ring with very high bridge. Short broad neck extends from underside of socket's fore-end to merge almost immediately with angular heel of blade.
Blade form: cruciform section tapering towards 4.4mm-wide screwdriver tip. All four faces deeply fluted.
Bayonet finish: blued but mostly worn to bright steel.
Imperial Russian Model 1891 socket bayonet, cruciform section and screwdriver tip, for Mosin- Nagant rifle.
Small hammer-like mark
Cyrillic characters resembling II / II in circle / M