To keep my 5 year old son entertained while I shopped antique stores I started him collecting marbles. At first, I would buy any and all that seemed reasonably priced. He is now 8 and spends his money collecting only “special” marbles. I have bought him books on the topic but we are both still complete newbies. Yesterday, he picked up this very old box of marbles at a furniture auction I was attending. These seem to be way older than anything we have come across. At least half appear to be clay. Some maybe stone. I am really not sure. So what am I looking at here? Thanks
