I am not a big fan of AI but the ID does help here with your images.
This one is a WVS probably an Alley Agate. The colors are right on.
It has at the very least been buffed up a bit imho.
@Alan can clear this up for us. I can see some after buffing compound in the lower areas.
Alan knows his "fixed marbles".
I appreciate all opinions and hope to see some more.
Marble--On!!