Zwiebelmuster Dish Trina 3 Compartments, Original Bohemia Blue Onion Pattern from Dubi

Height: 3.5cm
Diameter: 20cm
Weight: 380g

(Glaze is thin, clear, and protective material applied to ceramics)

The product is very safe to use - more at http://www.zwiebelmuster.eu/zertifikat-zwiebelmuster/
In Czech Republic, There are many producers of Blue Onion Pattern, but only Bohemia Blue Pattern from Dubi using this trademark:

 
 
The trademark has been modified over the years. More you can find here: http://www.zwiebelmuster.eu/geschichte/