Exhibit Antiques has dated this piece to the 1750s.
England, c1750. Period of George II.
Condition
Two small pinpricks to the foot rim which has also been polished.
Dimensions
Height: 17.5cm Rim diameter: 6.9cm Foot diameter: 7.2cm.
Technical Description

A classic English Air Twist wine glass dating to 1750. A large bell bowl above a multi spiral air twist stem with two well balanced swelling knops. Sits on a conical foot.
Historical Relevance
It is for many collectors, a classic form and a must-have within their collection...and rightly so. The fact that it had a few pinpricks on the foot, wouldn't have concerned Scott in the slightest.
Exhibit Antiques has dated this piece to the 1750s.
Specialists in 18th & 19th century antique glass
You can view the stock and full dealer information on the Exhibit Antiques Profile Page