I'llhavethat1

You lost me on the configuration/colorway. Does that make it a divided core or double ribbon by that logic? Either way it's good example of a non-"naked" marble due to the outer yellow bands

Naked core to me means no outer bands/layers or decorations, just whatever's going on in the middle. Like a solid core with no outer bands, or a ribbon core with no outer bands, etc.

Oooo I see a couple I like too, nice group. On ones like Post #12, that sort of pattern could be from near end of cane if not end of cane (or beginning of cane depending how you look at it). Is there a pontil on the end where the pattern is unfinished? The wild one in the first close up looks like the cane started to deform and was rolled over on itself. It probably started off as a latt core with colored outer bands. Don't see that pattern too often but IMO they are some of the grooviest looking marbles.

I didn't find them but found this pic I took earlier, I think the blue might be close (yours obviously has a lot less opaque white.

Hard to say Winnie. The glass on your marble is very clear and also striking color and pattern. I packed away a couple like this the other day I'll see if I can dig them out for another look. I see what you might be seeing as well, some Peltier marbles do have patterns that look similar. If you have this in hand maybe you could describe what's shown dead center 1st view and 5 o'clock, on the view to it's right. Is it a fold of glass, or...?

nice perspective

That's the pattern, Ric

Can you imagine showing up on the playground with that bad boy the size of a baseball? "largest vintage marble known to exist" man, it's a work of art

I don't think that's a pelt, slag or AA. Post #1 looks like it could be a wild Pelt pattern but the other views make it look more like a swirl with transparent areas. Like champion maybe? Or maybe I'm seeing it wrong. lol nice pattern though.

Almost 2" is about as big as they'd probably be able to make for a good seat on a check valve.

cool marbles!

A lot has to do with pattern and color so it really depends. Over 1-3/16" with a decent pattern would be of interest...majority of large slags I've seen are that size or smaller. Of course there are bigger slags out there... The whole industrial application is an interesting topic. Industry usually tries to save money by doing without excess so I'd expect the ones made for industrial applications to be made from the plainest glass possible (ie: those transparent green marbles used for fiberglass or something) Back in the day where things were at the onset of industrial revolution it would make sense that large slags would be used for industrial applications, cause hey - they're already in the business of making marbles and if there's an order to fill for some larger marbles other than "toys", why not?

These new silhouette avatars after the board update add to the "all I could see was the outline" mystery

looks to work ok as far as I can tell, and I love looking at this pic so I'm glad.

The sun shining through those marbles would look amazing I bet, very cool

Forgot to ask if there were 2 pontils on any of these examples. There's at least one on the blue and red. A pontil on the opposite pole would help tell us if they were handmade cane-cut. A single pontil could mean single gathered or else end of cane.

Pretty wild. I've seen pictures similar to the opaque blue on white before but I believe the marble was a lot bigger that the ones you show here. Even the large ones I'm not 100% convinced on their origins (not that I need to be, more a curiosity thing). What's the actual size of these? From the pics I'd guess glass marbles but more pics or seeing in hand might narrow it down a bit more. There are newer marbles that can look similar but I think these are older, just not sure how old. (lot's of help I know) Nice examples either way.

It's a good way to keep em separated.

Some Oldies , That blue and orange is a great contrast Winnie

Dragonfly landed on a hot pontil?

some neat cover art on those, the one with the marble cover could almost pass for Afred E.

One of the nicer groups of marbles I've seen on eBay, what an addition to a collection those would make. Thanks for posting the links

Nice "turbine" effect