Might very well be Champion. The WV (West Virginia) swirls types, including Champion, re sometimes quite hard to ID, except by experience of seeing a bunch (not easy to describe why).
Sorting some WV swirls and this one "jumped out at me". Anything from an Alien playing ping pong to a bear or coyotre with a plate for dinner and wearing a backpack..... Fun for me to see.
Again, not pontils but cold roll marks when the marbles were rolled to make round (machine made) and cooled too fast. Right two could be from 50's, 60's to present and left one new in the last 20 years or so.