Hey dave,
Contact the mb classic center and give him your vin #, Jon can give you the exact part # you are looking for. Most likely he can order you the piece as well.
There is also a German website which sells all these parts, maybe someone will chime in. Good for diagrams, but I find it much easier to deal with the classic center.
That goes for you too wolf, if you get tired of seein that white duck staring back at you.