Dutch 18th Century Opaque Twist Wine Glass c1780

Heading : Dutch opaque twist wine glass
Date : c1780
Origin : Netherlands   
Colour : Clear. grey hue
Bowl : A bell bowl
Stem : Double series opaque twist. four spiral threads outside a vertical gauze
Foot : Conical
Pontil : Snapped    
Glass Type : Soda
Size : 15.7cm tall with a 6.1cm bowl and a 7.1cm foot      
Condition : There is a 3mm x 2mm flake chip on the underside of the foot and a 3mm chip on the outside rim of the bowl
Restoration : None  
Weight : 108 grams