Medium sized bowl 13cm diameter by 10.5cm tall.
Medium weight not light weight.
Genuine double-walled internally silvered glass with lead stopper in base.
It's clear glass with the spatter on top layer but not a third outer layer of clear on top of that. However it's not 'raised' feeling. It feels smooth to touch, nicely done. Dropped in the middle right down, again very nicely and neatly made.
Appears to be a Kralik 'Beehive' shape- example of curves profile here:
http://kralik-glass.com/kralik-images/decoshapes/kds6.jpgI've done a lot of research on silvered glass/mercury glass and never come across one of these before.
I've seen one other in a greenish pale colours spatter with three little curled clear feet that may or may not be 1910-1920s ish era (could be 50s with the curled clear feet) - it is plain and a very different shape.
Then there is this small green one:
https://www.etsy.com/listing/642113504/antique-green-mercury-glass-flower-frogOther than those, nothing else.
I think this is 1910-1920s era. It has wear on the base and 'feels' right to me.
The shape looks like it could be Kralik.
The colours look similar to a few others I've seen, for example one on here sold as Anton Ruckl
https://p1.liveauctioneers.com/2132/111616/57716907_5_x.jpg?auto=webp&format=pjpg&version=1510775622However the closest in spatter colour appearance appears to be this one used as an advertising vehicle for Brüder Frankl Hundorf-Teplitz (Hudcov).
When I copy the pics and put them side by side the colours in the spatter are a match:
https://www.bohemianglass.org/katalog/bruder-frankl-hundorf-teplitz-hudcov/