I could Agree with Scott that the bubbles are from a torch originally, but still from torch work. Thanks for the invite Rich but I have been lucky enough to make marbles with a torch and been with folks while they made them from a glory hole(which also involved a "torch") I have also been in several large glass studios, Chihuly, Orient and Flume and Benicias' Neurot quite often. My too quick observation and lack of title absorption made me think vintage instead of seeing a modern made marble, I stand corrected.