Heading : Incised twist stem Georgian wine glass
Period : George II / George III - c1760
Origin : England 
Colour : Clear
Bowl : Round funnel with hammer moulding  
Stem : Incised twist 
Foot : Domed
Pontil : Snapped
Glass Type : Lead
Size :  15.8cm height, 7.2cm diameter bowl, 7.3cm diameter foot
Condition : One 3mm long shallow nick to foot rim  
Restoration : None 
Weight:  152 grams 

References :

English, Scottish & Irish Table Glass by G. Bernard Hughes Pg. 106