Unfired Luger???

[Dlxkey]

Newbie Luger owner and first time poster here.

Spent some time over the last couple of weeks going through the FAQ's and haven't really found anything definitive to crush my suspicion that this 1940 Mauser I found at Gunbroker has been fired VERY little. Seems too good to be true, however, so I submit the attached photo's for your inspection and feedback.
The pristine condition of the bolt face, feed ramp, and slides are what fire my suspicion. The rifling is equally pristine - but I didn't bother with a pic'.
I'm also especially curious about the grips, as they are essentially raw, with no finish - other than from the oil from my skin and some that's migrated from that applied to the metal. They appear to have the proper stamps - although only the "8" appears on the right grip. Looks like it was applied at an angle and wasn't whacked firmly enough for the "7" to make an impression - but that along with the raw finish makes me a little suspicious.
The bluing does have a nice, fine, even patina that's more easily visible in low, indirect light. This helps counter my lingering suspicions about it being a refurb'.

Please share your feelings with the group