"Tango" glass vase by Loetz Tall, curved bell-shaped beaker with multiple wavy lip rim. Decor "Ausführung 157" in so-called "Tango colours" made of dark blue glass with applied vertical threads and accentuated lip rim in orange opal. Designed by Michael Powolny according to his ideas for shape and decoration. H. 18.3 cm. A Bohemian Loetz "Tango" glass vase in the style of Michael Powolny. Bohemia/Czechoslovakia. Monastery mill. Loetz widow. Circa 1915.