that E is a 124.036 E500, its a car made by Porsche and is a legend. The way the car moves is a class of its own, cannot quite explain to you - you need to experience it to believe it - it still holds its value today. The S500L 140.051 is not that special compared to it.
The biggest giveaway of the 036 chassis from outside is the fender flares and 16 inch wheels.