The stamps do indicate that it's origin is German.
The finish indicates it's late ware production, maybe late 1944 or early 1945.
Tiriaq is right on as to value.
The action is about all that is holding value and some of the smith work required to make it an acceptable hunting rifle has been done, however, your pics don't show the things, such as a machined rear bridge. It would need to be refinished for most folks to find any interest in it.
Most folks today do not realize how good those actions are or how accurate many of these lackluster gems can be.
The 8x57js cartridge, when loaded to European specs is right on up there with the 30-06 and surpasses the 308Win. You won't find those loads in any North American manuals, not even those which show higher pressures. They're afraid of litigation, for the nimrods with similar rifles mounted with .318 diameter bores and using .323 diameter bullets.
That rifle would be a great candidate for a newbie looking to enhance their skillset on refinishing and maybe rebarreling to a "###ier" cartridge.
As is, that rifle would make a fine "utilitarian" hunting rifle. If it's in good condition internally, it's absolutely reliable under almost any condition most folks would hunt.
Factory ammunition is downloaded in deference to the smaller bores of some rifles and for rifles chambered for the cartridge, but with weaker actions.