Trying to show the seams on a somewhat boring group of yellow marbles.

[The Nickel Guy]

These three are of slightly different size, plus and minus 5/8th inch. I think they are all of the same maker and type.

They are opaque. I see some striation of a brown area on all three that looks similar. I show the two poles on the same marble in the single images. To me they have a Master Marble looking construction. Hope my pictures are good enough. Honestly, they aren't all that boring to me. I would appreciate a little help here.

Thank you