Former Owner
- Michel Chasles1
- Morot1
- Morris Harold Saffron1
- Morton Davis Mitchell1
- Museo Cavaleri1
- Muḥammad Ṣadr al-Dīn1
- Muḥammad Ṣābir1
- Nicolas Antoine Labbey de Billy2
- Nur al-Din Arslan Shah I1
- Oliver Henry Perkins3
- Oliver R. Barrett1
- Otto Vollbehr1
- Owen D. Young1
- P. Desq1
- P. Pigeot1
- Paul Gottschalk1
- Paul Louis Feiss1
- Paul Riant2
- Peter Arrell Brown Widener2
- Peter Arrell Brown Widener II2