Cabriolet Conversion ~ Beware First and foremost, please check the chassis number!!! We can't stress this enough. Cabriolet chassis number prefixes are as follows: 220SEb 111-023 250SE 111-023 280SE 111-025 280SE 3.5 111-027 This is probably the most informative photo of all. Notice how close the back gap of the trunk opening is to the chrome moulding around the top. A true convertible has a space of (approximately) 3 inches between the back gap of the trunk opening and the chrome moulding. Also the chrome moulding itself is 5 pieces on a convertible. (See closeup of next photo.) Notice in this photo that there is no clip. The chome moulding on a coupe is in 4 pieces. Another telltale sign is that the convertible top here sits above the chrome moulding, on a true convertible, the edge of the top tucks under the moulding. On the interior there are also some differences in the rear of the car. Notice the seat in the next photo. It has the wider seat top of the coupe and not the narrower one of the true convertible. (This car didn't even have a headliner installed for the soft top.) Notice in this photo of a TRUE convertible the difference in the rear seat area. This difference is to make room for the soft top with the boot cover when the top is down. In this photo of the header of the convertible top, is also a sign that this is a cut coupe.