Looks like Mauser 98 Rifle (Gewer 98). Built 1898 to 1918. Near as damn to 3,500,000 made. Original barrel - 29 inch. Five shot, full-length stock. Rear sight adjustable from 100 to 2,000 meters, built by many government arsenals.

Value uncut and original - $400 to $300 more or less. Value sporterized - well, enjoy shooting it.

The action can be converted to many, many different calibers, including African Big Game.

This is just a WAG. Correct me if I'm wrong.