Collection W. Schneider, Neu-Ulm, D  

Private Collection, Maastricht, NL  

Private Collection, London, GB  

Private Collection, Switzerland  

Ricola Collection, Laufen, CH  

Ricola Collection, Laufen, CH  

Ricola Collection, Laufen, CH  

Private Collection, Germany  

Collection W. Schneider, Neu-Ulm, D