I have a project kit I'm working on and based on the serial numbers its around a 1976 Hollywood or Big Beat (22/12/13/16) in WMP. Unfortunately the bass drum shell is toast due to a very heavy person using it as a trampoline at some point. So I sourced a replacement which appears to be from 78/79, 3ply, pointy badge etc but when it showed up it looks like a later version of the wrap. I had assumed the wrap changed when they went to the later 6 ply shells. So when did they change?
As for this kit, well, it's a bit of an animal so a non matching bass drum will have to do.