considering some of the original bluing is still present on the metal
I don't think that this is original finish. Truly it would require better pictures, and pictures of both sides of the pistol, but look at this picture for example.
Notice near the grip there are pinprick pits, those pits have bluing in them. This is definite signs of a refinish. The upper is too clean with the wrong type of tool marks to finish. That along with the ANECKAR stamp looks to have been cleaned up in the past from some serious pitting. Truly not uncommon in these guns, but signs of a refinish none the less.
If you remove the grips (watch that grip screw), the last three digits of the C96 should be present on the inner side of both grips.
As a side note this isn't always the case. When the C96 was still going through it's development phase (first 19000) there was no standard as to what you could find. It's not unheard of to see only one side of a grip serialized in lower serials.
But not to confuse the OP, with this late of a C96 you should find them on both sides. Also as Nabs points out don't overtighten that grips screw or you're taking a chance cracking the grip and lowering the value.
As for the OP there are a few final questions as I forgot to add that this is a pre war (a wartime would have the new safety proof mark on the back of the hammer, an intertwined NS) and made pretty close to 1914. Are there any unique proofmarks besides what we've already seen? The common ones you'll find are a Crown over a U, what looks like a curvy branch with four spikes (a deer horn), WAFFENFABRIK MAUSER OBERNDORF A/N on the top of the barrel, and the ANECKAR writing on the right panel. Is there anything on the left side in the same location as the ANECKAR stamp? Are there any Pentagons with a cross at the top point, are there any pentagons with letters under them? If there are unique proofs provide clear pics, that could increase the value a bit if this was forced into war.
Also for the OP to be aware to call this matching every serialized part must end in the last digits of the serial.
If there aren't unusual proofs I would consider this a shooter grade firearm and get that barrel hot and smoking. $1100 would be a fair value and get it sold fast, to the right buyer $1300 - $1500 should still get it sold but you would have to wait a while.