Large Enamel on Copper Bowl by Ragna Sperschneider (1928-2003)

Large enamel on copper with silver foil bowl by Ragna Sperschneider (1928-2003). Ragna is a German silversmith considered as a major enamel artist during the second half of the XXth Century.
80 years after her birth she had a commemorative exhibition showing her work in various Museums, Hamburg, Halle and Coburg.
This piece is illustrated in "Ragna Sperschneider Email und Metallarbeiten" Dr. Ernst Hauswedell & Co, Hambourg 1970, page 11