The smushed rim sounds like the casting port. It looks cast to me from your close up images.
It's looks a bit grainular and pocked, maybe from mould bubbles that popped. But I'm looking at it from a cell so maybe I'm seeing a distorted...
How was it made? Does it look cast?
Or maybe it used by a club as an educational piece and they wanted it to stand out. I'm just guessing.
1974 I think. Maybe someone punched it in later.
It may have been made before the Hobby Protection Act.
You should have seen the Clancy Brothers trying to sing a Dylan song . It looked like they were running out of building when they were done....
http://www.google.com/url?sa=t&source=web&cd=1&ved=0CCsQtwIwAA&url=http%3A%2F%2Fwww.dailymotion.com%2Fvideo%2Fx2530_neil-young-all-along-the-watcht...
Separate names with a comma.
