To anyone who has their gauge cluster out:
 

Can you look and see if you have a sticker on back the speedometer portion of the cluster?

It will look something like this:
420SEL:
http://i.imgur.com/DQfk7l.jpg

If you do can you report back with the K value and the number above it as well as the car model?

Thanks!

-Kris

Here is my best file picture from my 1985 300SD cluster. Unfortunately it is not clear enough to read the entire thing. It appears the the middle numbers are K-x42x.
http://i284.photobucket.com/albums/l...D/100_1522.jpg

Here's a shot from my 82 300SD I took a few days ago.

http://i.imgur.com/GwyBil.jpg

It kinda looks like yours.. I can definitely see a 4 in yours.

Text me later today Kris and I will look around. I have a 300SDL one out on my shelf and I think a 350SDL one here (it could be in Houston).

Happen to have one right here.
 

This came from an 86 420 SEL

Here's my 91 350s. Sorry the image isn't more clear.

http://www.peachparts.com/shopforum/...1&d=1333120976