You got the
obv. and
rev. switched. The
obv. invokes the
Mother of God - "Servant of the Theotokos" (DOV/LOV TH[C]/THEOTO/KOV.
The
rev. has the owner's name in a
monogram. You got it upside down.* Why don't you (or anybody else) see for yourself if you make it out. It ends with the
genitive -OV to indicate it is the seal "of ...." (-ou, not nominative -os). There are not too many letters and the name is well known.
Regards
Gert
* If you realise that 99% of
Byzantine seals have a
die axis of 12.00 it is relatively easy to find the correct orientation of
monograms when you have an
inscription.