Well, I have the pictures....I is a 9,3x62 Mauser made with a 1909 DWM action. Where..? No information about this. The strange thing is the barrel: it seems to be an original Oberndorf Sporting Mauser one. Seems.....The take down modification is also open to debate.
The rifle is nice, well done and, by its present owner, it is a good shooter.
Anyway, my friend question, and mine, is answered by the following pictures.
Thank you all!

PH