I am unfamiliar with the terminolgy California coupe. The rear seat does fold down, but never had a convertible top. I recieved this auto as a family heirloom handed down from my father in law, who now has dementia and remembers very little about the car. It's low mileage and in marginal condition, but it's a keeper. I think I have found a very knowedgable fellow to guide me thru this. Strickly an MB man, with several restored MB's of his own. With less than 5,200 of these vehicles produced, I guess they are all rare. Maybe some of the current or past owners will see this and pass me some more info.
Thanks for the reply.