I really don't understand what you are saying.
You can have an original 1163 M/H bezel for only $100 more than a replica???
I know the replica's that are out there. They are cheap, too thin and they just don't look good.
I have the impression that you think you can find a mint 1163 bezel for $300/$400.
Well, believe me, you cannot. Same as you cannot find a mint DON bezel for $1,000.
But anyway, let's assume that what you are saying is correct. Are you really hesitating to give an extra $100 for the original?
Come on man. Hard to believe coming from an Omega expert that knows the prices of original Omega bezels. :-)
Anyway, good luck with the hunt.