I don't have the original axle anymore-I sold it several years ago but the 2 axles were identical when side by side-at least from exterior observation. The axle in my coupe now came from a '73 280SEL 4.5.
Tony

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT