A 5½in (14cm) high cordial glass of c.1770, with a wrythen-fluted bowl set on a double airtwist stem. It is estimated at £100-150 in an online auction at Hansons from May 21-26.

hansonsauctioneers.co.uk

A 6¼in (16cm) mid 18th century glass set a multi-spiral air twist stem with shoulder and basal knops on a conical foot. It is estimated at £180-220 in East Bristol Auctions’ online sale on May 15.

eastbristol.co.uk

A large 10in (25cm) high goblet of drawn trumpet form, c.1740, on a plain stem with large tear inclusion on a folded conical foot. It has a provenance to a private collection, Berkshire. It is estimated at £600-800 in an online sale at Dreweatts on May 19.

dreweatts.com

This 8in (20cm) high pan topped bowl goblet of c.1750, engraved with floral and scrolling vine to the rim and set on a air twist stem and conical foot, comes from a collection of more than 100 18th century English drinking glasses to be offered for sale by Jeffrey S Evans in Virginia USA on May 20. It has an estimate of $300-500.

jeffreysevans.com