Verified answer

It's worth whatever someone will pay for it.

You didn't mention condition, or if you have all the records for it, if it's original, or anything at all that would be useful.

But at the end of the day, it's no different than selling anything else. If you get a buyer who offers you $5,000, and no other offers....it's worth $5,000.

If you get an offer for $100,000, it's worth that.

Supply and demand. You have the supply, but the value depends on demand.

Quick edit: Found a 1974 Mercedes 230 for $400 on Craigslist. Fair condition. Just as an example.

It's good you mentioned the car was blue. This is the most important thing...