I don't think so. Single seam doesn't always mean CAC. There are single seam Akros and Marble Kings ... and I have a single seam cat's eye.
Here's my single seam Bumble Bee.
Do you ever replay a post in your head when you're not in a place that you can log on and fix it?
This post should have said a Clownfish masquerading as a STUPENDOUS Master. Which is no big deal, right? Happens on eBay frequently, right? But this misidentified Vacor Clownfish happens to be enshrined on a popular collecting page. I can't remember the address right now but every time I run across it again I get grumbly.
Yeah, the vintage-patch-looking Vacors fascinate me.
And I still maintain there's a clown out there wearing the name "Master" because it fooled some of the bigger names in marbles.
Marble King on left.
I think Marble King is a pretty good option for the right. I have a single seam error Marble King bumblebee. Mine is definitely an error because it isn't round.
I don't recognize the header. The graphics don't seem very good. But it has the seam and the contents match the label. @Al Oregon, do you recognize it?
Note the lack of three-color corkscrews in it. That doesn't mean the wrong marbles are in the box.
"Special" was a catch-all name for Akro. Collectors somehow decided that Tri-Color Agates should be called Specials. But Akro sold various marbles in those boxes.
wow. How many vanes?
The vanes are looking quite Vitro, especially with what looks like a count of five, not six. But that base glass is sending me to the Billes-in-tete page to look for Swamp Thing pictures.
The Swamp Things don't look that close.
I know Vitro did a cage style cat in Windex-blue glass. But what else?
I'm stumped.
Top right showing signs of handgathering, but I'm having the opposite problem on this one from the marble I just commented on. Pretty sure I'm seeing the cutline but that's a weak nine if I'm reading the first view right. I really have no idea how to choose between makers for a handgathered slag that might not quite be textbook.
The one that looks most distinctly slaggy is the top right. It has a pretty clean 9 in the first view but when I look for the cutline on the other end, I see such random-looking swirling that I'm a bit surprised by it. Are you able to pinpoint where the cutline is?
The bottom right is distinctly swirly.
The two on the left are telling me I need to get a refresher on slag versus swirl. If they're slags then I'm saying Akro.
Because of the thin-ness of the ribbons on the middle one, I could see that one being an Alley.
I started to wonder about Champ on the outside, but at that size ... I'm thinking Jabo there.
@wvrons ?
This picture appears to show a clear base. Seems quite revealing. I think the white is layered over the clear. I does look like Vitro, but not a solid base. Okay, well, that's all for me. I gotta call it quits for the night.
Those pictures are helpful. They're showing why I hesitated to agree with Wedding Cake. The Wedding Cake is supposed to have the "off white base". Your marble looks as if it has a clear base glass.