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Alan

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Alan last won the day on May 12

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  1. That's interesting, because I don't care it it has any UV reaction at all. (Its not as if UV is a determinate of age, value, collectability/rarity or manufacturer). Backlit photo on the web almost universally take the prize for the worst photos available. Focus, exposure and the ability to ID it backlit is usually miserable.
  2. It looks like Akro glass. Possibly a wonky flop-over cork (you can see the fold line).
  3. If it were me: I would pass on this cats-and-dogs mixture. Take that money to a marble show and buy ONE marble well-priced at that amount.
  4. It could be anything...some scrap. UV reaction is not a big thing.
  5. I think (by appearance) that some had a final gather in clear and other had a gather in the base color. If the latter, the light reflecting off the silver mica is filtered through that color. So the reflected light takes on that tint. A reminder to us all that all marbles are seen and perceived by reflected light. Perhaps the intent of the word is to describe whether the outer glass is clear or base color. Also, the thicker the outer layer, the dimmer the light reflected off the mica is. Or put another way - the less obvious the mica is.
  6. Which brings me back to the question: What is a "cased" mica? All micas have an outer clear glass gather - otherwise the mica will just gradually fall off. That is part of the standard cane construction. (If someone has a vintage mica with naked mica on the outside, please speak up). What does the word mean in this context?
  7. Perhaps its just me - but I want to know what a specific term is supposed to mean before I just accept its use only because it has become commonplace. We have a lot of words in this hobby that are casually used (and many more new words recently invented). Perhaps we should pause and ask ourselves specifically what they mean and why its use is important. Have we ever seen the term "uncased mica" used? YMMV.
  8. All vintage micas are cane construction. All.
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