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Antique 19th Century American Eapg Ashburton Flint Glass Crystal Whiskey Tumblers Circa 1850 - a Pair | Chairish
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optical glasses, explained by RP; crown, flint, silicates, soda-lime, borosilicate, germanate, phosphate, fluoride, chalcogenide, filter, lead-free, eco-friendly, glass types, essential properties
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