c240 high mileage service

Hi All, i'm in the process of buying a merc c240 it is a 1 owner car with full merc service history, the only thing is it has high mileage like 190,000 miles, the mileage doesn't really put me off too much as i know that merc engines have reputation for longevity, does any one on here know what the last service interval would have been on this car, and what should have been done/replaced at that interval, the cars price is cheap enough to take account of the mileage.
any advice would be much appreciated, once purchased i will be back with some pictures
many thanks
dps