Fritz Schwerdt, ringen, 1929-1930. Schmuckmuseum Pforzheim. Foto Coert Peter Krabbe, mei 2019, CC BY 4.0

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Fritz Schwerdt, ringen, 1929-1930. Schmuckmuseum Pforzheim. Foto Coert Peter Krabbe, mei 2019, zilver, agaat
Fritz Schwerdt, ringen, 1929-1930. Schmuckmuseum Pforzheim. Foto Coert Peter Krabbe, mei 2019, CC BY 4.0

Fritz Schwerdt, ringen, 1929-1930. Schmuckmuseum Pforzheim. Foto Coert Peter Krabbe, mei 2019, CC BY 4.0