The Throne of Maximian (or Maximianus) is a throne that was made for Archbishop Maximianus of Ravenna and is now on display at the Archiepiscopal Museum, Ravenna. It is generally agreed that the throne was carved in the Greek East of the Byzantine Empire and shipped to Ravenna, but there has long been scholarly debate over whether it was made in Constantinople or Alexandria.
Source: Christian Antiquities Museum and Archives

A detail of Suppling Grain to Joseph's Brothers. Throne of Archbishop Maximian, Byzantine or Coptic, 545–553AD. Archiepiscopal Museum, Ravenna.
A detail of Joseph and his father, Jacob. Throne of Archbishop Maximian, Byzantine or Coptic, 545–553AD. Archiepiscopal Museum, Ravenna.
The left side of the Throne of Archbishop Maximian, Byzantine or Coptic, 545–553AD. Archiepiscopal Museum, Ravenna.

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Referenced as Plates XCIV-XCV in The military technology of classical Islam by D Nicolle
XCIV-XCV "Story of Joseph," carved ivory panels on Throne of Archbishop Maximian, c.550 AD, Byzantine or Egyptian (Cathedral Museum, Ravenna).