She's an old gal.... to answer the op question ill need to pull out my 1960`s 8 ball. My best guess is a gas bubble, or a platchet error...there's a die crack coming off the void and under the E. That makes me think its a damage blank...Pryor to mintage. The two cracks from the die . But again I still playing with a 1960 toy!.....
I agree. The metal is raised above the reeding in the side photo. It was soldered and then broken off.
