See GlassGallery images, each with click main image to enlarge feature:
main view (http://glassgallery.yobunny.org.uk/displayimage.php?pos=-20698)side view (http://glassgallery.yobunny.org.uk/displayimage.php?pos=-20700)base (http://glassgallery.yobunny.org.uk/displayimage.php?pos=-20699)H. 2¼" 5.6cm, d. 4½" 11.3cm, w. 1lb 0½oz 467g.
This is in amber, thickly cased in crystal, and then tooled, in my opinion much like Whitefriars knobbly. Nicely levelled, with pontil scar neatly ground out, both polished.
Any information would be welcomed, particularly on date and manufacturer.
Thanks for your interest,
Bernard C. 8)