I sent the Davis brothers some Glow Glass Powders a few years back....the marbles offered here and made by them that Glow....are the first ones that the brothers EVER made. each one is signed and is a "one of" and "first of" it's kind.
From my personal collection
All of the Davis marbles displayed here that Glow are the experiments from the first time that Steve and Rick incorporated Glow Glass Powders into their marble production. A very collectible piece of our modern art glass movement.