Know very little about these and asking others who may know more, these were my uncles (who's 70) collection from when he was a child and some were passed down from his parents and their parents. I separated them into 2 piles with the glass/agate (he told me some were agate but not sure which) in one and clay/similar in the other. I weighed both boxes (after taring them so that's the actual weight of just the marbles not the box). A few may have small chips, any large cracked ones I tossed but that was only 2 or 3. The sizing in mm are the 2 largest ones in both clay/glass. Any other questions feel free to ask but again, don't know a lot about these, just hoping to find someone who loves collecting antique marbles and will appreciate them more! Starting with a high price but feel free to make offers! Can't take returns as I explained this to the best of my ability and would not be able to have any idea if any were switched out. Thank you for understanding. This is from a marble identification group on facebook ... apparently a good amount of worthwhile marbles in this lot! Not looking for anything less than 1K for it. Thank you! There?s a bunch of Akro Agate Popeye corkscrews and other corkscrews too. Some nice early examples . . Sort them into look-a-like, similar patterns ____ the circled marbles are Akro agate Popeye corkscrews very collectible! And the clear with the white, pink, and blue stripe is a Handmade German 1850-1920 there?s some nice marbles lurking in that bunch agreed. This is a good collection