Sinai Greek MS 408 of the Ascetical Homilies is dated 1371.
The title reads,
The Ascetical Homilies of our righteous Father Isaac the Syrian, the Ascetic and Anchorite, Sometime Bishop of the Christ-loving City of Nineveh, translated by our most righteous Fathers Abba Patrick and Abba Abramius, philosophers and hesychasts of the Lavra of our righteous Father Sabbas.
The images of Sinai Greek MSS 408 and 409 shown at left, and the detail shown here, are used by permission of Saint Catherine’s Monastery, Sinai, Egypt. These images are licensed for use on this website only; further use of them is forbidden without the prior written permission of St. Catherine’s.
Sinai Greek MS 409 of the Ascetical Homilies is dated 1374.
It was made three years after Sinai 408 shown above and its text is identical to it.