Hi there,
This is just a Door Lock. I believe you may have submitted a reply to another question.
There is really no picture to show and if there was, both would look the same.
Just open your driver side door and look at the locking mechanism on the door.

The part number I need to fit this low serial number is 126-720-0135 fitting an old serial number, lower than A452298 the lock will fit models: 300SEL - 300SDL - 420SDL - 560SEL - 300SD with serial numbers lower than A452298. Mine is a 1985 300SDL chassis#276319

As stated, there appears to be none in dealer stock across the US or even in Germany.
It is a door lock part. Please rear my original message again
Thanks,Ron