A tall early 20th century Deco tapering sea green glass decanter and stopper with a polished pontil mark on the square base. Designed by Barnaby Powell for Whitefriars Glassworks.
 
English, circa 1930
 
Dimensions

Height (with stopper): 39cm / 15¼"
Height (without stopper): 32.5cm / 12¾"
Width: 10cm / 4”
Depth: 10cm/ 4”