ἐπισφραγισμός
From LSJ
Κύριε, σῶσον τὸν δοῦλον σου κτλ. → Lord, save your slave ... (mosaic inscription from 4th cent. church in the Negev)
English (LSJ)
ὁ,
A confirmation, Sch.Hermog.in Rh.7.425W.
German (Pape)
[Seite 988] ὁ, = ἐπισφράγισις, Rhett.