At the beginning of the 19th century, St Nikodemos Hagiorites is reported to have seen a very old imperial seal of the Emperor Romanos IV Diogenes (1068-1071), 'I saw a damaged sigillion by the Emperor Romanos IV Diogenes, on which the seal had representations of the king Romanos and the queen Eudokia with two children protected from above by Jesus Christ. On the back of the seal, there was a cross and some capital letters. According to what I was able to read from this very worn sigillion, it was validating the possession of lands that were dedicated centuries ago.' It was last seen and described in 1867 by Victor Langlois. In 1903, Smyrnakis writes that the sigillion had become lost, but its seal remained. However, he describes a different seal, as Kriton Chrysochoidis recently observed, the same as the one visitors can see today in a display case in the library: On the front, Christ is depicted standing between Romanos and Evdokia and crowning them; the three sons of Eudokia from the previous emperor Constantine I – Constantine, Michael (who later became Emperor), and Andronikos – are depicted on the reverse. Unfortunately, the content of the sigillion has not been preserved.
