Joe,
My advice: Don't buy it!
If it is a 95 Mauser, then it was specifically designed to handle the pressure of a 7mm or 8mm Mauser round, which is in the low to mid 40,000 psi range.
This rifle has apparently been altered to "7.62," which in all likelihood means the 7.62 NATO. The 7.62 Nato is a specific military round that generates pressure in the mid 50,000 psi range.
The .308 Winchester is a hunting cartridge, and is NOT identical to the 7.62 NATO. Although its external dimensions are virtually identical, it has a much thinner brass case, so that it can hold more powder. The SAAMI pressure range for the .308 Winchester is 66,000 psi!
So, you're asking if it is a good idea to buy a rifle, that is more than a hundred years old, that was designed to handle the pressure of a 45,000 psi round, and then fire cartridges in it that are in the 55,000 to 66,000 psi range? No, its a real bad idea. Don't waste your money.
Just because a rifle is a Mauser does not mean that it is strong or safe. The Model 98 Mausers are, from an engineering viewpoint, the stongest design, but even those were made with a somewhat soft carbon steel (heat treated on the outside to give it a tough skin.) They were not made with modern nickle steel or chromium steel.
And, each Mauser 98 must be evaluated on its own merits as well, based on age, condition, and time period of manufacture.
If you really want a Mauser, and its got to be in 7.62, then save up and buy a used Mark X Mauser (commercial model) in .308, built in the 1960s and 1970s in Europe (Yugoslavia I think) on original mauser equipment. Or, buy one of the newly manufactured 98 Mauser sporters in .308 that our now being distributed.
If you really want a military model, and could live with a .30-06, then save up and buy one of the Columbian Mausers, which were built I believe by FN in the 1950s. Even then, you must have the headspace checked before you fire it, and make sure there is no major rust on the receiver.
Hope this helps.
Regards,
Mannyrock