Hi Boris. Thanks for your info. I know very little about marbles. I'm going to the Portland, Oregon marble show this Saturday. Hopefully, I can get some more insight into the terns and the marbles identies/manufacturers.
Is it best to separate them by color and style, ie, swirls, ribbons or by size??? What is an mcr? And I don't think I can take all of them, there's 473. Any suggestion, greatly assists my anxiety! Thanks!