Heading : An Early Masonic Engraved Glass Rummer
Period : George III c1800
Origin : England 
Colour : Clear 
Bowl : Cup shaped. Engraved masonic cartouche and monogram
Stem : Blade knop collar above a plain stem
Foot : Lemon squeezer
Glass Type : Lead 
Size :  12.4cm height,  9.0cm diameter bowl, foot 5.7 x 5.7cm
Condition : Excellent
Restoration : The mere absence of any small chips on the foot is a very strong indicator that that the foot  rim has been polished. The side of the foot is also near vertical and not slightly canted, this confirms it.*
Weight:  272grams

We have never seen a square based rummer that