- Intaglio with Chi and Iota, 190-300 AD, Swiss National Museum.
- The 5th century Byzantine Column of Marcian displays the XI monogram inside a wreath.
- Detail of IX monogram on Constantinople sarcophagus, end of 3rd, early 4th century.
- Cover of Merovingian sarcophagus, Musée de Saint-Germain-en-Laye.
- Merovingian sarcophagus symbol, 6-7th century, Paris. Musée Carnavalet
- Slab sarcophagus, Beyazit, Constantinople, 5th century.
- Constantinople Christian sarcophagus with XI monogram, circa 400.
- Detail of the early Christian IX monogram in the chapel of La Gayolle (La Celle, Var).
