I have no history for this bowl, other than my mum picked it up in a charity shop a few years ago because she thought it was unusual.
The bowl measures 25cm diameter and approx. 7cm tall. It has a fixed glass divider sectioning the bowl into three, similar to those in the bowls in the 1931 Brockwitz catalogue, tafel 41. (on glas musterbuch)
The reason I say that it looks like a Brockwitz pattern is because there is a plate and a dish in the 1926 Brockwitz catalogue that looks to be incredibly similar. (also on glas musterbuch) Tafel 061, No 8070 & Tafel 88, No 9017.
It is similar to Davidson design 303519 but it doesn't have the patterning along the bands.
If anybody has any ideas I'd be grateful.