Exhibit Antiques has dated this piece to the 1750s.
A Georgian air twist wine glass. The drawn two-piece glass with a bell bowl which transitions into a multi-spiral air twist stem. The piece is supported by a conical foot with a rough pontil. A fine example.

Date & Origin
England, c1750. Period of George II.
Condition
Excellent, age-related wear as shown, no chips cracks, or restoration
Dimensions
Height: 15.3cm Rim diameter: 6.2cm Foot diameter: 6.7cm.
Historical Relevance
Hand-made around the time the University of Glasgow school of medicine was founded in 1751.
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