I will go out on a limb and say this car is a 250 (or 220)SE and has had rear collision repair. Why?
- The steering wheel is an early one as is the side rear view mirror. The interior rear view mirror also appears to be chrome which is the earlier one. Later 280 SE was black plastic. I wouldn't think anybody would switch all of those out.
- The rear bumper is a Euro bumper because it has the hole in it for the euro license plate light. This car should be a US car because of the Bullet turn signals and rear license plate lights. Also There are no turn signals in the headlamp door. So probably US.
- One more piece of damning evidence of a rear collision. The US license plate lights are from the readily available W108 sedan and not the W111 coupe/cab. The bulb access screw is on top where as on all original W111 coupe/cabs have the access screw on the bottom. I know because my car had rear damage and the lights were switched out.
So, the car had a rear collision and the trunk lid was used from a 280SE as was the W108 license plate lights. The replacement bumper was a Euro version.