Finding a specific classic Merc
 

Hello people.
I would love to get my hands on 2 Mercs my dad used to own when I was a kid assuming they are still alive somewhere
One was a 65 Monterey Breezeway and the other was a 68 Monterey 4 door sedan.
I have both VIN numbers, but they do little good on modern sites like Carfax and Autocheck as they only list cars with standardized VINs (1980 and up).

Anyone have ideas on any site that can track antique car histories?