This is a knife bayonet used from the period 1895 into WWII and was designed to fit the Austrian Model 1895 Mannlicher Infantry Rifle. There are a number of bayonet sub-models including types with a hooked lower quillon; with a "front" sight for the carbine variant; non-functional dress types; etc., etc.
The most distinct feature about this model is that the blade appears to be upside-down (cutting edge on top).
All models have wood grips (with attaching variations), steel pommel, crossguard, and blade.
The scabbard is of blued sheet-rolled-steel (not shown).

Examples made in Austria are indicated by the stamping OEWG for Osterreichische Waffenfabrik Gesellschaft (roughly translating to Austrian Arms Factory); this can be found on the blade ricasso and perhaps on the scabbard frog stud.

Examples made in Austria are indicated by the stamping OEWG for Osterreichische Waffenfabrik Gesellschaft (roughly translating to Austrian Arms Factory); this can be found on the blade ricasso and perhaps on the scabbard frog stud.