Heading : George V and Queen Mary Coronation Commemorative Coin Glass
Period : George V
Origin : England 
Colour : Clear 
Bowl : Bell shape, engraved crown with polished detail and GR cipher
Stem : Hollow ball knop wisth enclosed silver three penny piece, ball knop cushion
Foot : Conical and folded
Pontil : Snapped
Glass Type : Lead 
Size :  17.4cm height,  9.0cm diameter bowl, 9.2cm diameter foot 
Condition : Excellent, no chips or cracks 
Restoration : None 
Weight:  301grams 

The coronation took place on 25th June 1911