Exhibit Antiques has dated this piece to the 1750s.
A very elegant 18th century wine glass dating to c1750. It has a trumpet bowl above a multi spiral air twist stem with a shoulder knop. Conical foot.
If, however you consider it as a extension of the bowl, then it’s an air twist stem. Either way it’s a very elegant example.

Date & Origin
England, c1750. Period of George II.
Condition
Excellent, no chips cracks or restoration
Dimensions
Height: 16.8cm Rim diameter: 6.7cm Foot diameter: 7.2cm
Historical Context
Hand-blown around the time the first patent for a one-piece pencil with eraser was issued to American inventor J. Rechendorf of New York City.
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