Gew 98 Mauser gg k285 with Imperial German eagle proof marks.All matching #'s with the exception of the bolt and front barrel band. Post WW1 arsenal rework with later rear sight.
Bore good with sharp rifling . Possibly tapped for scope?
Bayonet - waffenfabrik,Mauser A.G. Oberndorf G.N.
top of blade has a crown over w18---rifle without bayonet, $400