duotone

Yes, haven't seen one with these colors but it could be a Vitro Victory.

A very nice example.

I agree with Veiligglas opaque swirl. Some of them look like Alley calligraphies.

Agree with CAC. I've seen this listing—nice, and the size is appealing.

Both Peltier Rainbos.

All Marble King Bumblebees. Veneered yellow and black, with much variation in how those colors are applied.

Could be a Vitro Opal.

I'd say it's a Vitro Bulls Eye.

Looks like a twisted up Peltier Rainbo.

Agree with Master. Good colors.

I agree with Alley. Noteworthy that it has that fingernail element that Ron Shepherd pointed out in Alley identification videos. I see it in the 5th and 8th photos.

I agree with Vacor, possibly a Zombie. From this useful identification site: https://www.billes-en-tete.com/detail.php?id=134

If you haven't seen it there's an interesting post from Cheese over at AAM about identifying marbles based on size. Following that guide this marble could be either Alley or Jabo. https://www.allaboutmarbles.com/viewtopic.php?t=52143

I agree with most here that these look CAC. The patterns and separation of colors lean toward CAC to me.

Agreed, looks like an Akro Snake. Nice.