"Rozenburg"
Rozenburg eggshell porcelain A vase from the Rozenburg factory in The Hague made of eggshell porcelain with a hand-painted decoration of a bird and a flower on the other side. There were about 8 examples of this vase made. Signed Rozenburg and the signature of master painter WP Hartgring. Circa 1914. website: www.artdecodoesburg.com 
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