Hi Jim, Welcome to the Luger Forum!! Your Luger was completed in about August 1942. The holster is probably made in 1939, as David suggested.
The real question would be do all the internal parts that are numbered match the "02" on the pistol. I can see from one of the photos the main toggle pin is properly numbered, but what about the trigger, hold open lever, breech block, firing pin and grips? The grips should either be numbered to the pistol or have an eagle/135 stamped in the inside. If the number isn't present, you may have to use some magnification to see the E/135 which is called a Waffenamt Mark or inspection mark.
The 34n magazine is for a 1936 Luger and the 2149q is for a 1939 Luger. While not "proper" for your 1942, they are still valuable and worth about $85 each.
The holster doesn't look too bad, but I really can't tell from the photos. Once Jerry Burney starts working again he can easily repair it for you. Notice, I said he could, not many, if any have his skills!! But say the holster is worth $100 (probably low).
So you paid $1465, or so for the pistol. It is difficult to estimate the percent of original finish from your photos. It certainly has wear marks on the usual spots.
If the pistol is all matching, except the magazine, then I think you paid a bit too much for the rig. For reference, Simpson LTD has a 98% byf 42 advertised for $1600. The value drops off rather rapidly with a reduction in percent original finish!!
BTW, byf 42 Lugers didn't have matching magazines!! The black plastic bottom fxo magazines marked with an E/37 on the side and no markings on the bottom are proper.
Hope this helps!! Good Luck either way you go!!
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