Former Owner
- Edward Alexander Parsons2
- Francesco Taccone2
- Galeazzo Maria Sforza2
- George Venables-Vernon, 5th Baron Vernon2
- Giacomo Soranzo2
- Henry Probasco2
- Horace de Landau2
- Lathrop C. Harper, Inc.2
- Lawrence J. Schoenberg2
- Luigi Celotti2
- Luigi Cora2
- Maggs Bros Ltd2
- Seymour Stocker Kirkup2
- Sir Thomas Brooke, 1st Baronet2
- Sydney Cockerell2
- Tammaro De Marinis2
- Vladimir G. Simkhovitch2
- Zayn al-Din al-Juba'i al'Amili2
- Acton Griscom1
- Albert Charles Robinson Carter1