- Mount Athos, Dionysiou Monastery, ms. 322 (nunc 259): page range 1r–95v
- Acquired: donated by the estate of L.G. Westerink
- Film: 35mm Black-and-white Negative
Prof. Westerink's note:
"Mone Dionysiou (Athos, Greece). Manuscript. 322.
Psellus. OD: (94 ff.)".
At the beginning: informational sheet of the Patriarchal Institute for Patristic Studies in Thessaloniki, dated on 20 June 1973.