thanks Al and Achim,
VIN is 113042-10-003548. If I'm interpreting the Data Card correctly, the car was ordered in 1964 from St. Pierre et Miquelon (Order number 47190164). Data Card shows car delivered on 19 Mar 64.
The seats are in remarkable shape but unfortunately, they're the wrong color - Data Card reflects Interior Code of 119 and these seats appear to be Tan. If these are in fact the correct 230SL seats, I'll need to have them upholstered to white-gray (code 2102) per the data card.
As soon as I get a chance I'll upload pictures (I'm traveling at the moment). I welcome any recommendations on the seatbelts.
Thanks for the kind offer Al, I will certainly be seeking your advice,,,take care, Charles