This ring has a very simple brass base of the style used in the late 40s. The bands are adjustable. The ring top has a pair of tabs on the underside which are bent up to attach a 5/8” dia. perfectly spherical cream-colored plastic ball which for lack of a better idea, we will call a cue ball. Ring has a deep bluish glow after exposure to light. Ring base has essentially Mint luster. The only example we’ve seen. Simple, yet very neat.