98k Mauser ID help

Hello,
I'm new to Mausers and could use some help ID'ing this one. It is a RC with matching numbers on the receiver and stock, other parts have mixed numbers. Solid walnut stock an thin butt plate.
Stampings are intact. RC electro-pencil markings in a number of spots. Its missing the small lock screws, sight hood, and cleaning rod. The stock is pretty nice, though it looks like one area may have been sanded.

This is a new acquisition though after shooting it today for the first time, I'm not sure how long I'm going to hang on to it. The bore pitted somewhat, but may worse than I originally thought as it keeps turning cleaning patches dark green. Lots of deposits in that bore and after two days of cleaning they keep on coming out.

I'm curious to know the date of this rifle. I was told it was 1941, but I keep reading about the date code gg was associated with 1942. Maybe somebody can set me straight.
There is a number 41D192 and right next to that is another D where the barrel meets the r'cvr.
Below the Mauser logo is a zero... might that signify 1940?

Also interesting is that below the stamped .Mod 98 there is barely discernable
" Mauser (something) Oberndorf"

I'm not sure if this qualifies as a Banner Mauser (or what the definition of that really is). I'm guessing this rifle started out as a commercial receiver and became pressed into service during WWII.
If anyone can offer some feedback that would be great.
I'm looking to track down a few good Mauser ID books as well.

---------- Post added at 09:44 PM ---------- Previous post was at 09:40 PM ----------

Sorry for the double post- not sure how I did that

---------- Post added at 09:50 PM ---------- Previous post was at 09:44 PM ----------

Mods please delete this thread, I accidentally doulble-posted :confused: