Welcome to Fintail land!
We are a quiet and peaceful people, ever on the prowl for parts.
On my 1964 190c I went to the local junkyard and got 4 14inch Mercedes steel wheels, they all have the same lug pattern. I think I paid 125$ for all 4. I had to bust the surface rust off of them and paint them up but they looked good. Then it’s just a matter of getting matching hubcaps.
The classic center has been tons of help with finding replacement parts and substituting parts. Less and less is available for these cars every year. I just went through trying to find headlight seals, ended up having to make my own from a sheet of rubber.
Biggest issue is that if you have a W110 Finny you are looking at an entry level car with little to no options from 50+ years ago. They don’t have much of a following, they aren’t worth much, and there aren’t many left. But when you’re cruising and people are breaking necks to figure out what kind of Mercedes had fins on the back it makes it worthwhile.