Posted 6 years ago
Perhaps it never had a purpose! It's green iridescent glass with three blue claws looking as if they're holding it down. A hefty piece of glass for it's period.
It's called 'Blue Claw' on www. Kralik-glass.com where you can see more examples should you wish.
Height 13 cm./5 inches Diameter 17 cm./6.75 inches