Personally I would say these shells are legit. Doesn't RCI re-enforce the seem with a piece of Acrillic. These shells don't have that.
Fake or RCI is not the question. It is about the exact year 1976. Same as the seller Drumwacker dealt with. Where does 1976 come from?
Everybody slow down and take a deep breath and repeat after me: this is not about fake badges and RCI "Vistalite" shells. This is a discussion about whether or not there exist BO2 badges without serial numbers. If they exist can they be from later in the 1970s?
The only reason Vistalite came into it was via a link to an example which happened to be a fake Vistalite badge, and my example which happened to be a Vistalite badge. There are non Vistalite fake badges. Most Vistalites do not have fake badges. Most Ludwigs do not have fake badges. None of these facts inform the question about BO2 badges without serial numbers. As far as real Vistalites with real badges go, Rob Cook (p160) has them as 1972/3 so so there isn't anything which would be out of place for an early shell to have a BO2 badge without a serial number. No complete re-write of the timeline of badges without serial numbers is needed just because they are on Vistalites. On the other hand, patterns weren't introduced until 1975 (again p160) and that's a hint that the snare and bass with pattern C might imply that the BO2 badges sans serials are later than previously thought. So perhaps a useful diversion.