Former Owner
- Menno Hertzberger1
- Merlemont family1
- Michael Tomkinson1
- Michel Chasles1
- Morot1
- Morris Harold Saffron1
- Morton Davis Mitchell1
- Museo Cavaleri1
- Muḥammad Ṣadr al-Dīn1
- Muḥammad Ṣābir1
- Nur al-Din Arslan Shah I1
- Oliver R. Barrett1
- Otto Vollbehr1
- Owen D. Young1
- P. Desq1
- P. Pigeot1
- Paul Gottschalk1
- Paul Louis Feiss1
- Petrus Jensenius1
- Petrus Ysermans1