Iridescent Glassware Cup Circa 1900 Butterfly Decor Teardrops

Beautiful Art Nouveau glassware, circa 1902/1905, from Austrian manufactures, unsigned.
Flat bowl, green blown glass, round foot, pinched body, applied with 4 tears on a background with speckled metallic iridescence, called "butterfly", revealing itself by reflection in a blue-red-gold range. Good condition, I did not find any flaw to note.
Dimensions = 19cm x 8cm.
This item is for immediate purchase, payable by credit card or paypal.
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