Bagpipe Player by Otto Naumann, Bernheimer Fine Arts Ltd., Sotheby's, Aernout van Lingen, Paul Mellon, Fazakerley, Gregory, Mr. and Mrs., Hendrick ter Brugghen, Herbert von Dr. Klemperer, Glenz, Johnny Van Haeften Ltd., Gustav Klemperer Edler von Klemenau — VisualArtsDB
![Self-Portrait [obverse]](https://api.nga.gov/iiif/ef429707-0339-461d-9eda-f14e3fe428af/full/843,/0/default.jpg)
