Exhibit Antiques has dated this piece to the 1750s.
An 18th century plain stem ale glass dating to c1750. It has round funnel bowl well engraved with hops and barley. Sits on a plain stem above a conical foot.

A really nice example.
Date & Origin
England, c1750. Period of George II.
Condition
Excellent, age-related wear as shown. No chips, cracks or retoration.
Dimensions
Height: 17.5cm Bowl Diameter: 5.8cm Foot Diameter: 7.3cm.
Historical Context
In 1742, Henry Dundas, 1st Viscount Melville, the lawyer and politician who became the last person to be impeached in the United Kingdom.
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