Hello,
This bayonet is in fact a "Seitengewehr" of pageantry, or exit. Private purchase, it is lighter than the regulatory model. In fact it is not a bayonet, because the button and the anchoring spring are fictitious, there is no rail on the back of the handle to slide the rifle's mouthpiece nipple there. This bladed weapon is not regulatory and never has regimental markings or official reception point.
The blade of these bayonets are often / always engraved, but the engraving is shallow and fades over the cleaning ... This is the case here, but by observing well we still see remains of engraving.
This writing is nominative, made by its owner.