This is an exceptional condition P.08 made by Mauser in 1940.  This example is all matching including magazine, firing pin and grips.  I would rate the condition at 99%.  It would be extremely difficult to upgrade unless you could find one with 2 matching magazines.

The pistol alone is $2750 The complete grouping below is $3500. The spare magazine is a correct 122 coded mag and one letter block later than the mag in the pistol.

Pistol Picture Set 1 Pistol Picture Set 2 Holster Spare Magazine Tool