seems to have been a long day already, have just spent ages in the snow chasing son's escaped ferret around the garden grr
anyway, back to the glass.
my bowl is 21.5 cm diameter across the bowl so slightly bigger than your one and lighter, no not cased but similar shape although I think there is a more defined flare at the rim with mine
The ring between the bowl and foot on both does look similar -can it potentially be used as an identification marker?
have you got ny picsof your daums uploaded here for a quick 'compare and contrast' please?
so much glass, so little time, thanks m