Swiss Model 1957 bayonet for the Stg57, manufactured by Wenger (W on ricasso). Military issue. With scabbard and leather frog.
Unlike previous Swiss bayonets, the Model 1957 bayonets were numbered separately, rather than when the rifle was issued to the soldier. The soldier's issued M1957 bayonet's serial number is unlikely to match the issued Stgw57 rifle.