Hi. Welcome.
The others could be some kind of industrial marble where they don't worry about creases. Or it could be decorative since they're otherwise nice looking.
Hi Stice. Oh yes, it's surprising how much there is to know about marbles. Some people see a generic little glass toy. Some people see a whole chapter of history.
???? Jabo?
Not sure. Interesting how the marble seems to have some folds in it but the blue stayed on that one side.
Did it come with an older group or a newer one?
That chalk is something else. I have a few faint chalkies ... I'm afraid they may be coming fainter over time though I have them in a box away from air and dust and fingers.
Big?
I can't think of any big ones matching that pattern/coloring. It has the "Master or foreign" seams, but the coloring?
What did it come with? Could it be another Vacor?
Oh gosh, I still had more to add from a list Brian Bowden sent me back in 2015 but he had so many that I got tired. For two years. And now on facebook I'm seeing so many more. I add one or two here and there.
The colors make me think of Marble King.
But the somewhat V-shaped seam in the first picture pulls me away from that.
How large is it? Is it clear inside?