I would think this is Hussar, cavalry, though the "L" throws some doubt on this. I looked at Jeff Noll's book, and will check Görtz-Bryans later, but going though my database, I do not have a matching 17th Hussar recorded to maker-date this rifle, though it is "probably" Danzig and probably 1909. Most Cavalry known are Danzig's and 1909. Some exceptions of course, Bavarian would be Amberg of course, some Spandau and Erfurt are Cav also, but not Hussars usually (one exception for Spandau, 1909 Spandau 427 a 3.H.4.97.)
Anyway, most Cav are Danzig's and most 1909. Craig Brown has another rifle with a similar unit marking, closest I could find, no pictures unfortunately, only a report and Craig didn't define the unit marking for us. Our forum has suffered considerably since Craig passed, to the same degree Gunboards-Mauser has suffered since John Wall's loss.. his rifle was 1911 Danzig 8654 17.H.L.4, which might be medical. Not sure, unit markings are not a strong suit.. attached find the only other Hussar/17, I use to own this stock set, traded it for a Simson as part of a larger deal, but i can't find the pictures i took, which are better than the guy I bought it from (these are those)
Also, maker-dating pre-war is difficult by stock acceptance, pre-war the inspectors are far less static, they can vary widely within years, even blocks, and I do not have enough examples to create a reliable trends on these early makers. G98 are worse, at least more 98a exist with original stocks, they survived in larger numbers, - pre-war G98 are much tougher to find with original stocks, unaltered and well documented. It would be difficult to nail down maker-date on this stock set alone.