I have one that is surplus.
What year is it? I have a spare one around, a 1991, for American spec. cars.
It says for the 420SEL, 560SEL, and 560SEC, 1991 Owners manual on page 1 inside the cover.
In decent shape. Except for a bad crease on the front cover.
$10 and whatever postage costs are to where you are, and it is yours.