Three Dutch Opaque Twist Wine Glasses c1790

Heading : Dutch opaque twist wine glasses
Date : late 18th or early 19th century
Origin : Netherlands   
Colour : Clear
Bowl : Round funnel
Stem : Double Series Opaque Twist consisting of two pairs of spiral threads outwith a gauze
Foot : Conical
Pontil : Snapped    
Glass Type : Soda
Size : The tallest 15.0cm tall with a 5.9cm bowl and a 7.5cm foot      
Condition : All very good
Restoration : None  
Weight : 344 grams combined