James Snapp announces an interesting find on the Textual Criticism discussion list (read the message here). As he was looking for further evidence of early writers' utilization of Mark 16:9-20 he came across an article, H. L. Ramsey, "Our Oldest MSS of St. Cyprian, III: The Contents and Order of the Manuscripts L N P," JTS 3 (1902): 585-94. Ramsey describes some features of Codex Vindob. 962 (MS L of Cyprian) from the ninth century, that resembles the Umlauts in Codex Vaticanus.
Wieland Willker has made available the relevant page from the original article by Ramsey here.
Snapp ends his message by asking, "Were Codex Vaticanus and this copy of works of Cyprian ever together?"