Look at your door thresholds, you should have metal plates that say Mercedes Benz on them. Others won't have them. Also, I think you will have wipers on your headlights which others won't.

I'm looking for a good 95 E420. How do you like yours? Any problems yet? I've always had diesels so I kinda scared of gas cars with a lot of mileage (100k+). But can't find many diesels, and now I read that the 6 cyl dissel isn't that good anyway.