I know exactly what that is because I recently sold an identical one. It's a post WWW1 oberndorf commercial sporter. It's difference to the prewar oberndorfs and the military actions in that this was made for the purpose of sporters but not to the tight pre war tolerances nor yo the same steel, finish and bluing quality. Pre war, and military actions were stamped waffenfabrik oberndorf, whereas these are marked in italic mauserwerke oberndorf.
They were made in a variety of calibres from 243 through 6.5's and bigger. They came typically with military bottom metal and double set triggers that were a bit rough. The stock was made of low grade walnut, had a Bavarian comb and pancake cheek piece, plastic buttplate with white line spacer - as is grip cap. Grip is narrow and finger sits very (too) close IMHO to the trigger guard. Front end was either rounded or schnabel. Barrel was typically light sporter profile with simple leaf rear sight and block ramp front sight. These usually came with sling studs feather than barrel bands.
These were/are good rifles of very good build. The actions are very good, not pre war oberndorf or DWM 1909 tolerances, but very very good. They were Aldo drilled and tapped from the factory do usually mount bases without cant.
An action and rifle to shoot and enjoy, and one worth rebarreling, but not worth using for a +$5000 custom project. I'd value it around $750. Is that a leftie m98 on the sofa behind?