Almost a month ago I checked one of the best Mercedes-Benz W126s I’ve ever seen in a Concours-level 1987 560SEL. Today, we have another outstanding 1987 W126 that isn’t quite Pebble Beach-ready, but it is damn close. This car comes to us from South Carolina dressed in Smoke Silver Metallic with the rare burgundy leather interior in a condition that isn’t often seen. And oh yeah, it’s a diesel too.