Part of the floor of a small Western Sigillata bowl with ring foot.
Stamp at center of floor:
Firm dark red glaze. Brown fill, early Roman. 4514 Leica, 93-41-8 PD 1172-7 ... 13 May 1947 ... ΝΝ ... ΝΝ:70-75/ΚΓ-ΚΖ
Fragment from a black figure skyphos. Outside, black glaze below, then reserved, with a glaze band.
Incised inside:
Good black glaze inside.
ADDENDA: according to Agora XXV, possibly Themistokles. Roman ... 13 May 1947 ... ΝΝ 2812