tracyp,
this is only my opinion... and I am not a holster collector, but the holster looks like a repro to me...
While it shows some handling wear, there doesn't seem to be any stess marks on the top of the belt loops... and the belt loops don't seem to have a "crush" from being formed by being worn on a belt with the weight of a pistol in it...
The buckle may be genuine, but the photographs are not clear enough to make a judgement on that. The fuzzy photographs that accompany some auctions can sometimes be intentional... This collage of photos seems peculiar because the photos of the gun and holster are all fuzzy when looked at under digital magnification but somehow the photo in the right hand lower corner just happens to be sharp enough to see the maker's mark clearly...(a feat the seller says he can't make out)
I don't see anything in the auction ad about return privileges and that is a red flag for me when combined with a statement like ask all questions before you bid.
On the other hand, the byf 41 Luger appears to be a pretty nice one... It is your money... you have to decide how much it is worth to you to get this gun... I would get transaction conditions in writing, and ask for lots of clear photographs before bidding...
just my