I doubt very much that the fore end wood is correct. By what I can see in the photo, it is not low cut where the mag cut off would have gone. The low cut wood went way beyond the 0L and 1L mk1 rifles.
I have seen many armorer put together rifles, and while many were concerned about accuracy, very few that I have ever met had any concern or inkling about what was correct for the various time periods of production from LB.
As either a shooter, or a collector's rifle, I would agree with Claven that the price is a tad high.