I have to say right off the bat that I really don't know anything about collecting marbles. I found a large collection of marbles for $12 and bought them on a whim. I then posted about it on my Instagram and had several people offer to buy them. That might not mean anything, because they might not be worth anything. The only thing I can tell you is that almost all the marbles have pontil marks. Anyway, it would be great if someone could tell me something about them. I'm only posting two groups below, but I have a lot more. I'm really grateful to anyone who can share their thoughts on these. I so appreciate it.