That seal will be hard, perhaps impossible, to
crack without a published parallel piece that is not broken along the channel (which I couldn't find and there is always a
good chance there is none). In any case, you have the
obverse and
reverse swapped in your photo, and the
monogram side is upside down.
The
monogram is peculiar - it may identify the owner as a person named 'Stephanos', if the left
side would have phi and epsilon, but we can't be sure. The
legend starts 'sphragis', which means 'seal'. That could refer to the actual seal you have or to
Christ as the 'seal' of the owner.
The
legend of the
reverse lists the owner's titles. I can't make much sense of them, but he was certainly '[L]ogoth[etes of the] Dr[omos]', legible at the end.
Regards
Gert
