Jabo Classics--nice ones, treat them like eggs.
Jabo Classics are what were made in a production facility and sold worldwide--millions were made--few are mint like yours look like.
These do not like being banged about.
Marble--On!!
These are nice images.
They are both very close--good sorting here.
I think that the first one may be a MK Rainbow.
@Melissa knows these better than I do--lets call her in here.
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Size always matters with marble ID.
I am guessing that these are around 5/8".
Both are Jabo Classics imho.
The blue one is just very nice. I have not seen one like this before.
Thanks for sharing it.
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The tag is one thing, the marbles themselves is another.
To see it in English?? I have not seen it before.
It may be what you are looking for but @Al Oregon may have your answer here.
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Yes x2.
These are cute little clays that are bound to be in anyones collection.
They are like the Hummingbirds of any collection. If you do not like these--get a new hobby imho.
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I agree with yellow here--given your images.
(I just love these things--Yellow CAC slags)
Take it into the sunlight and make sure yourself.
There are many Amber slags that look Yellow--until you get them under the sun.
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I would call it a vintage WVS--no maker from me.
Maybe a messed up Vitro but that is just a stab in the dark.
"What the Heck" is a good name for this oneπ.
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This is the kind of stuff that I love to find and see.
I have no clue as to what they are called or sold for.
Thaks for sharing them, I have not seen these before.
Marble--On!!