cheese

Alley or Ravens. I lean Ravens.

I'll put Master out there.

I could call that Ravenswood.

Having a hard time seeing Alley here with the size and that pink combined... I think newer.

Yep both Wales pinchers. I don't have much love for the pinchers except for these, they are a really nice type.

I have no idea what wave black lights I have. I didn't know it mattered. With my black light, very few Heatons glow.

X 2, Pelt.

I agree the green one is an Asian "Imperial" and the uncertainty about the brown one and yellow/red.

Aventurine glass is not the aventurine mineral. Two different things. This is not a shimmering spruce. Cairo novelty is what I see.

It looks like it should but I have never seen one that did.

Lol Chicago, I hit send and it showed the balloon that you replied to this topic at the same time I did.

Master is where I'd have that center one.

That's 100% a Heaton. This brownish purple they used in this marble and several others was weaker and softer. It reacted badly with being buried, fractured a lot, and often got the ridges or abalone effect. A similar brownish purple was used by Alley and Cairo as well and it fared the same in the ground. I am pretty certain it's Wissmach glass, as much of it in that color was also found at Heaton and Cairo.

I agree, right one is a Neon Conqueror. Pretty hard to find and collectible. They seem to often have blow holes for some reason.

Not only can the weather play on the effects produce by the marble making setup, but just the equipment itself. The rollers and cutters operate off of a big electric 3-phase motor with belts, gears, and/or chains. All of this stuff turning and making noise, vibrating. "Vibrating".... this is may be one of the more problematic/influential things that makes a marble's appearance change. It turned MK rainbows into MK swirls, and it turned JABO swirls into patches. I was at DAS making marbles and vibration moved the marble machine. The operators noticed it before it caused too much distortion (their job), but if the machine vibrates too far to one side or the other, the ingot can drag the side of the cutter and end up making a patch. The operators took a long bar and pried the machine back in line with the flowing stream of molten glass to keep things working as they should. The temperature of the glass in the tank can change the marble. Hotter glass means it flows faster. The machine is set at a certain pace, the hotter glass running faster makes bigger ingots and hence, bigger marbles. If the rollers aren't big enough, it makes orange peel, then out of round marbles, then misshapen discards. If the glass cools too much, it makes smaller marbles, footballs, the orifice plugs up, you get drizzles from workers rodding out the clogged orifice, and cold rolls on the marbles. When the cutter goes back and forth, so does the molten glass stream. It sways with the cutter. It's cool to see. Once you see it, you can see how delicate the whole process is and how one small change can affect the way the marble looks. All this to say, the smallest shifting of the marble machine due to vibration could cause the ingot to turn 180 degrees and make one seam perpendicular to the other. It might happen 2-3 or more times a month, or a day. The diligence of the worker tending the machine would be the factor here. Something so simple can be the difference.

Alley here too.

I do see several if not all that appear to be Red Ravens.

Hard to see in the pics, but the plates and the brass case are angled at maybe 45 degrees. I suspect to deflect impact somewhat, to make a straight hit into a glancing hit. I showed Ron the ones from Cairo, knowing what they were, and he verified. This pic shows it better:

They were stacked, layers of glass with layers of that celluloid between them and glued. The celluloid is badly discolored and you can see how it deteriorated from the edges towards the middle as it was in the ground, until it finally came apart. Ron had the whole assembled unit. A little different shape but on an angle, as you can see the edges of your glass plates are also angled. In one pic you can see the many layers stacked together to make the viewer.

Vitrolite made them. I saved a lot of them from Cairo but when they dried out they came apart. Vitrolite made them for the war effort. After the war, they were sold as scrap cullet and Cairo bought it to make marbles.

Nice Chris, the "sheets" are laminations of bulletproof glass made for WWII tanks by Vitrolite.

I've done a few. Here's one of the first I did.

They can be tough when they get big like this. MK or Akro? Looks veneered?

Agreed. Chad is on it!

X 2, onionskins. Nice!