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Is there a difference - coin dot, spot optic, inverted thiumbprint ?
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<p>[QUOTE="Cherryhill, post: 233785, member: 70"]I'm probably not the best to answer this, I'm biased.</p><p><br /></p><p>When the effect was begun, ca. 1884, it was called Polka Dot. Early researchers ca. 1925 didn't know this and named it "inverted thumbprint." As if a thumb could imprint glass and survive to make the second imprint. Within a year or two of its introduction the opalescent process became involved and we had white polka dots on a colored ground. I would call these opalescent polka dots. Within the next five years, (before 1890) uncolored circles within colored ground had been developed. The manufacturers simply called these Opalescent Wares. </p><p><br /></p><p>Since I seem to be a traditionalist, I see no reason to invent names for them, they have names their makers applied to them. Also, I don't expect their size would influence their name, but I suppose "tiny" and "giant" could be added. </p><p><br /></p><p>Fenton seems to have called their wares something, I guess their names could be used, too, but I haven't kept up with the new manufacturers.[/QUOTE]</p><p><br /></p>
[QUOTE="Cherryhill, post: 233785, member: 70"]I'm probably not the best to answer this, I'm biased. When the effect was begun, ca. 1884, it was called Polka Dot. Early researchers ca. 1925 didn't know this and named it "inverted thumbprint." As if a thumb could imprint glass and survive to make the second imprint. Within a year or two of its introduction the opalescent process became involved and we had white polka dots on a colored ground. I would call these opalescent polka dots. Within the next five years, (before 1890) uncolored circles within colored ground had been developed. The manufacturers simply called these Opalescent Wares. Since I seem to be a traditionalist, I see no reason to invent names for them, they have names their makers applied to them. Also, I don't expect their size would influence their name, but I suppose "tiny" and "giant" could be added. Fenton seems to have called their wares something, I guess their names could be used, too, but I haven't kept up with the new manufacturers.[/QUOTE]
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Is there a difference - coin dot, spot optic, inverted thiumbprint ?
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