This 1947 premium was one of the most requested premiums ever. Brass ring base features star and lightning bolt design representative of shooting atoms. Bomb-like attachment on the top has red plastic tail fin cap that removes. Object was to look inside to see flashing atoms although this action lasted only very briefly and rings no longer display any atomic activity. However, interior of this one gives off distinct soft blue glow in darkness, one of the few we've seen still able to do so. N. Mint.