Hi, Angelo,
The the 230SL Euro and US turn signal stalks and multifunction switches are the same. There are other MB stalks that look like the Pagoda ones, but are not interchangeable; often eBay sellers either don't know the difference, or don't care (as Pagoda parts bring more money). I recently sent an email to someone advertising a switch for the 230SL and told him that it was not correct; he replied that he was sure he was correct, and sold it as such.
Did your new one come in an MB box with a 113 part number on it? If what you have is not identical to your original, you should consider trying to return it as being incorrectly described (if possible), and consider overhauling your original.
-David Pease
'66 French 230SL