Thanks for the input fellas.
Dave, I think you're right, the badge looks like it's been caught and folded forward against the grommet. If the wrap is original, and it seems it is, then it has survived very well. And all i did to clean it was the usual Novus on the wrap, polished and waxed the hardware (you know you're cleaning when it's nickel - that stuff turns everything black) and a light beeswax wood polish on the inside. It was pretty clean to start with.
Famousdave - Dave was the owner and I bought it off him. Good to know it's a Gene Krupa RK. I figured the muffler knob was wrong but one of those will show up one day.
Purdie - I dare say I'll do some recording with this drum in the near(ish) future so I'll post some samples then