I have a windshield wiper transmission linkage assembly that came off a 1968 280SL, but should fit all W113 models. The linkage is in good shape, and all pivot points and stainless steel wiper shafts move freely, and there doesn't seem to be any wear on the mechanism. It even has most of the vibration deadening felt still bonded to the metal frame (see pictures). $100 plus actual shipping cost. Please PM or email me at lensbenz@comcast.net if you have further questions. Thanks for looking.
Len
Len