Carse Antiques has dated this piece to the 1850s.

It has a shaped rim to the top with flat round foot to the base with short hollow stem. The markings and bubbles (imperfections) to the glass are lovely.
One of the nicest fern engraved glasses I've ever seen.
SIZE; 7 1/2" diameter. 9 1/2" high
Carse Antiques has dated this piece to the 1850s.
You can view the stock and full dealer information on the Carse Antiques Profile Page
Carse Antiques is a registered member of LAPADA