This is a Georgian, mouth-blown, monteith or bonnet glass with a blue glass rim dating from the end of the 18th century, c1780.  

 

The glass is in excellent condition for its age.  It shows age related wear and tear to the rim of the base consistent with some 240 years of use. It has a rough pontil mark on the underside of the foot.  

 

The glass is in the clear colourway and double ogee in shape and measures 5.8 cm (2.3 inches) in diameter at the upper rim.  The bowl is plain and is enhanced with a blue glass rim.  The bowl ends in a small annular collar and a conical foot that measures 5.5 cm (2.2 inches) in diameter.  The glass is 6.6 cm (2.6 inches) in height.  There are no chips, cracks, significant scratches or any evidence of restoration.    There is a collector's sticker to the base.

It weighs 85 g. (~ 3 oz.).

 

Quote item: 8737