Set of Six Harlequin Twist Liqueur Glasses

Set Of 6 1950's Harlequin Twist Liqueur Glasses, possibly Italian Art glass. the set of 6 glasses all have a beautiful loop stem, which terminates into a clear glass base, and all are in excellent condition, they are fine, delicate, yet stylish and elegant. 
height of glasses are 12.5 cm or 6 inches. the trumpet vessel is 7 cm or 2.3/4 in length with top opening of 5.5 cm or 2.1 in.