It has taken decades for just American machine made marbles. And we are still making new discoveries....thanks to all of the mib heads doing the work and sharing their knowledge. Agree with Josh on overseas mystery mibs...I'm still working on my WV swirls lol....
Condition, Condition, condition,,,,,,and size always matters...agree with marble shows are the way to go ...and ebay gets out of hand and lots of false info...byer beware.........
Just read the page in your book .spot on imho ...pricing is hard...
Just beautiful man .....would love to come talk mibs and eat oysters .....
that is a good time in my book ....
Bet there is some sea glass marbles out there somewhere lol.......