The 1973 is a European model. I drove it for two years before getting some major bodywork done. I have all the original parts. It's been in storage for a few years. It's currently stripped and coated with a yellow primer. Car was originally dark blue (both interior and exterior). Follow link for pics.
1973 Mercedes-Benz 450-Class - Montreal, Quebec Used Car For Sale
The 1976 is the US model. It was running before I put it in storage a few years ago. Car is white with dark blue interior. Follow link for pics.
1976 Mercedes-Benz 450-Class - Montreal, Quebec Used Car For Sale
Both cars have a lot of potential for someone's restoration project but I would be willing to let then go for someone looking for parts.
Both cars are currently stored in a garage that I need to vacate ASAP so I'm accepting any reasonable offer.
I am located in Montreal, Quebec, Canada.