I believe there is a similar car (I'm no expert in this vintage or model MBZ, mind you) up for auction on Bring A Trailer right now...

https://bringatrailer.com/listing/1961-mercedes-benz-300d/

Auction ends in about 2.5 hours (around noon PST, october 17, 2018)

Current bid is at just over 18k...

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Filmmaker, Dad, Citizen of the World in Asheville, NC
=== current vintage stable ===
'73 VW Thing, '09 BMW 328i Convertible, '07 Honda Ridgeline, '94 Chevy Step Van