Not Much But Looking to Learn

[Marbleized]

Hi Everyone, Here are a few marbles that don't have much color and 99.99999% sure no value, but I'm just curious about what they are. I'm thinking new vitros, but they don't have "all yellows" so maybe foreign? (Anything that I can't ID is foreign to me. LOL.) Thanks.

[Marbleized]

Vitros?

[wvrons]

Vitro patches. Same construction as All Red but no red.  Red was the most costly color. If they ran out of red they did not shut the furnace down. They just used what ever they had. The worst thing on a glass furnace and marble machine is to shut it down. Everything can freeze up solid, all the metal begins to rust in just a few hours. The longer a marble machine runs the better the marbles surface will be.  After a marble machine sits cold for hours or days. The rolls rust, when it is moved under a furnace the marbles for the first half hour are junk. Or a 7/8 size machine can take a hour to get the rust run off of the rollers. After a marble machine runs 24hrs. a day for two or three days straight. The rolls will look like chrome.  Keep everything running steady 24hrs. a day or lose the most important thing. Marble per minute to stay in business.  Marbles per minute, 250 per minute or more, 24hrs a day, seven days a week , week after week if at all possible.  

[Marbleized]

13 hours ago, wvrons said:

Vitro patches. Same construction as All Red but no red.  Red was the most costly color. If they ran out of red they did not shut the furnace down. They just used what ever they had. The worst thing on a glass furnace and marble machine is to shut it down. Everything can freeze up solid, all the metal begins to rust in just a few hours. The longer a marble machine runs the better the marbles surface will be.  After a marble machine sits cold for hours or days. The rolls rust, when it is moved under a furnace the marbles for the first half hour are junk. Or a 7/8 size machine can take a hour to get the rust run off of the rollers. After a marble machine runs 24hrs. a day for two or three days straight. The rolls will look like chrome.  Keep everything running steady 24hrs. a day or lose the most important thing. Marble per minute to stay in business.  Marbles per minute, 250 per minute or more, 24hrs a day, seven days a week , week after week if at all possible.  

Thanks WVRons!! Really interesting and valuable information. Marble making must have been like the restaurant business. Tough to keep the business profitable. Btw, is that why some of the marbles have little inclusions that look like dirt in them, perhaps the rust from the rollers after a shut down? Just wondering. Thanks again!