Did you get the right side of the receiver? Any others of the stock, specifically the right side where the cypher typically is, or the wrist, - while the take down is inconsistent with this range it is very possible the TD was added late in the war or in the Republican era. It has a walnut stock and apparently no grips, which is right for this range. In all cases, regarding evaluations, acceptance patterns are key to telling a story. They more than anything else provide the "facts" that make up the story.
** the acceptance on the bolt would have been helpful too, this rifle looks to be largely factory, minus the bluing and TD, but the RS is something of outlier, - such rifles survived, period photographs and surviving rifles are well known, but very uncommon (to have a mix like this). Further, a rifle that stayed in German hands, say in a brig or prison, should have been carried on official totals, - property marked - further, something like a prison you would think be equipped with a 98a or if off the books (
not considered "German" central government, more a local affair, though typically even rural-city police and forestry-river police types were included in official counts, even in the Rhineland...) a substitute rifle (K88 or G88). Naturally, these latter variations were the first rifles destroyed, they were pretty scarce after 1924, - you see Freikorps and similar organization with them, but by 1924 the Germans had destroyed most of their stores of captured weapons and secondary or obsolete variations, but perhaps if Craig was correct and this is a "jailer rifle" it was issued after 1924-1925 when most of the destruction had taken place (
naturally, when you cull a herd, you cull the lesser ones, but I would still think a 98a more suitable for police types)