Mine is exactly the same , ditto the handbook , and I looked up the EPC , the Oris towing bracket is there for the car , with MB part numbers and applicable to my car .Interestingly though the VIN plate on my 1997 R129 implies that towing is not permitted, despite the handbook giving a braked trailer weight (1500kg, IIRC):
View attachment 100365
Since my 1993 car predates the EC regulations , it wouldn’t have been a problem to fit a towbar . Perhaps the chassis plate only shows a combination weight if the car is ordered with a towbar from the factory. There are plenty of aftermarket brackets available for the car too . I still have a W124 one which I offered up and noted that all fixing points line up .