Looks like a Peruvian SG98.
Please look for the the Peruvian coat of arms on the back of the pommel. The coat of arms ist often ground off and the bayonet sold as German.
Same opinion like Amberg, is a peruvian M1909 bayonet, copy of S98.Its matched with scabbard? here probably a depot piece, never used or only very few times.b.r.Andy