Masonic Engraved Opaque Twist Stem Firing Glass c1790

Description

Heading : Masonic Engraved Opaque Twist Stem Firing Glass
Origin : Northern Europe. late 18th century 
Colour : Grey with amethyst tinge
Bowl : Drawn trumpet
Stem : Four spiral threads outside a vertical gauze
Foot : Thick disc firing foot
Pontil : Snapped
Glass Type : Lead free
Size :  Height 10.5cm. bowl 6.3 and foot 7.3
Condition : Excellent
Restoration : None
Weight: 162g