If you are in need of a cup holder for a mercedes SL 1990-95 this is a great solution without altering your car.
It's a custom,quality cup holder designed specifically for Mercedes SL's 1990-1995.It slips into any one of the cassette holders in the center console.The cup holder will collapse and is adjustable to various size drinks.The cup holder can be stored in the center console when not in use if desired.
The cup holder is $29.95 + S/H and can be ordered from:

checkeredrabbit@myvine.com

See picture attached.

correction: The image can be viewed in the thread: SL500 1993 Sound System