I took the unit out of a 1987 Mercedes 300 SDL. The unit was working and the controls were working however, the LCD screen has areas of the display which are not lit. You can get the screen swapped out or replaced. Buttons were functional, however were finicky with use. Unit comes with the original case. Price reflects condition. Although this works, I’m listing it as “for parts” so that you know what you’re getting.
eBay