Zwiebelmuster Cup A/1+ Saucer ZA/1 0.12L + 13cm, Original Bohemia Porcelain from Dubi

Zwiebelmuster Cup A/1+ Saucer ZA/1 0.12L + 13cm, Original Bohemia Blue Onion Pattern from Dubi

Cup: Volume: .12L, Height: 6cm, Diameter: 8cm, Weight: 100g
Saucer: Height: 2.5cm, Diameter: 13cm, Weight: 110g

The Painting (Onion Pattern) is under the glaze which makes the product safe to use in microwave and dishwasher. Breaking the product with a force is the only way to interrupt the painting.
(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/