Everyone has a different opinion, but I would never pay $10k for that watch. It will never be correct. And the condition of case, insert, and bracelet is less than good. The dial might be nice, but it's the wrong dial. And given the condition of the crystal, you can't really even tell if the dial is good. You can't expect to sell a watch for top dollar under those conditions.
The value in parts may well be $6k-$7k if you are a good seller with a reputation and you can get top dollar. It could take a lot of time and effort to sell everything off, and don't forget eBay and PP fees. It's one thing to list hypothetical prices for parts, it's quite another thing to take the risk and actually sell them.
If you are selling a broken parts watch, I don't think you can expect to get full-blown retail, and I don't think $4k was an insulting offer. I'm not looking for an argument, just expressing my own opinion.