XRF on Hamilton 992/992B GCW?
Has anyone settled the argument about the Gold Center Wheels on the 992/992B yet by using XRF? it's a non destructive technique that can see through to any base metal core, so it can rule out plating.
And it would be easy to test multiple without having to sacrifice a load of wheels, we'll be able to see if certain serial number or date ranges were actually solid 14k or plated 24k, or if they were all one or another