Where are you in Ohio? Click on the e-mail button in my message here and let me know. I'm looking for an E420 (W124) and it looks like you might have some insight on what to look for on these cars.
1980 450SL @ 103,000 miles
1966 230SL @ Unknown Milage
2006 C230 @ 110,000 miles (Sold)
1994 E420 @ 118,000 miles (Sold)