As mentioned, claw mounts are custom to the gun and a given optic. The cost for a new set to be made and installed is $2400. The cost to make a new set of rings that fit existing bases is harder yet, $3000.
Judging by the gun (this is practicality speaking, not insulting your gun) it is not worth the endeavor.
If you want the very best mounts for that gun that are less expensive, EAW pivot mounts cost $600 for the hardware if you're a proficient gunsmith that can install them. If you're not, NECG will install them for you for $900.
If it were me, I'd rip that shoddy front claw base off that gun and get out the bronze wool and oil to remove the rust. I'd then measure the hole spacing of the front and back of the bridge. If they are "standard" mauser spacings, I'd get a set of Talley bases and matching Quick Detach rings with levers. Total cost: $200. It will get you where you want to go for a fraction of the cost, saving more money for optics.
As an aside, claw mounts are permenant and expensive. If you ever wish to change scopes, you throw them away and start over with another many thousands of dollars. Thus, if you're spending $2400 on new claw mounts, you generally want to be using a $2000-$3000 optic that will stand the test of time for the next 30-40 years. On the other hand, with Talley mounts you can change your mind every week and throw a variety of glass on it with installation effort within the realms of most hobbyists.
