obv
[Μή(τη)ρ] Θ[(εο)ῦ]
rev
1 Στε-
2 [φ]αν(...) [.]α
3 [.]τας
―
―
―
Μήτηρ Θεοῦ. Στέφανος […]
Mother of God. Stephanos […]
The name could be reconstructed either in Nominative - Στέ[φ]αν(ος), or in Genitive - Στε[φ]άν(ου), or in Dative – Στε[φ]άν(ῳ). The Nominative seems more plausible, if one accepts that the following word is a family name ending in sigma, which, however, is not certain at all.
―