https://sfbay.craigslist.org/eby/cto/d/antioch-1980-mercedes-diesel-manual/7295086866.html

1980 mercedes diesel manual 4 Speed with 95,000 original miles - $8,500

"...it is super rare with a 4-speed transmission thank you for reading."

Not sure I'd go with "super rare" but I'm not sure what the breakdown in numbers is.

Clean looking car. He might get that amount or close to it.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K