If the glasses you are talking about above are coated with a mirror coating, then they ARE NOT the AV-2000 lenses from Arrow Springs. The AV-2000 filter from Arrow is the same as my AUR-92 and other suppliers ACE filters. It is an advanced didymium lens, actually a 2nd generation filter.
The ones you were talking about previously are Didymium II made by Oberon Manufacturing, NOT AV-2000 by Arrow Springs.
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Chaotic Glass: Safety for the glassworker, and random thoughts and opinions on the state of the glassworking world
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