It is unlikely that the clawmounts would be "original". Such mounts would be "scope specific" and since the drilling was made for the "trade" it would not be possible to know if or which scope the eventual owner would want. Even in cases of guns ordered directly from a factory with a specific scope mounted, the actual work would more than likely be done outside the factory using parts manufactured by specialty parts manufacturer( ie. Bock, EAW, ERA, etc.).
Mike