Exhibit Antiques has dated this piece to the Georgian era.
A superb 18th century Anglo Irish facet cut cordial glass dating to c1740.
It has a small drawn trumpet bowl with a band of OXO engraving. Sits on a very thick drawn stem with large diamond facet cuts above a wide conical folded foot.

Based on the form and metal, the glass dates to c1740. The thickness of the stem and large cuts may point to an Irish origin. The foot, proportionally is very wide, with a wide fold, again pointing to an early date.
The only question is, when was the cutting actually done.

Early facet cut glass does exists from that period, primarily on the continent, but there are documented early examples of English glasses having facet cuts, apparently done in the earlier period.
This example is exceptionally rare. Facet cut drawn trumpets are rare, thick stemmed examples are rare, facet cut cordials are rare, folded feet on facet cut glasses are rare.
Date & Origin
England, c1740. Period of George II.
Condition
Excellent, age-related wear as shown. No chips cracks or restoration
Dimensions
Height: 13 cm
Bowl Diameter: 5.2 cm
Foot diameter: 8.3 cm.
Exhibit Antiques has dated this piece to the Georgian era.
Specialists in 18th & 19th century antique glass
You can view the stock and full dealer information on the Exhibit Antiques Profile Page