My point being that it is all relative to what you are buying. I hardly consider the wrong version GENUINE dial in a watch at this price point to be a major problem. Is it a problem? Yes. Major? No. It can be corrected fairly easily; dials for this ref are not difficult to source, and the effort to replace is nominal, especially if performed during a service, which a watch of this era should have done anyways.
If you find my second comment offensive, you should maybe step back and have a beer and try to relax. I'll even paypal you the funds to buy one on me. These are just watches and a discussion; nothing more. A 16750 is a good watch, yes. But a watch that a serious collector would buy for reasons other than wearing? Maybe. A serious collector would invest in a 6542 or early 1675 with PCG, gilt, chapter or whatever else people are deeming as hot these days, and those are the pieces they would have more concern for being correct. Had a similar scenario been present on a 6542 except with something like a steel insert instead of a bakelight been a major issue? Yes. Especially considering that finding a replacement isn't as cheap or easy as, say a 16750 MKI dial.
We are all serious collectors to whatever degree and extent, but I think you need to relax a bit. Getting worked up over something like this is hardly worth it.