Kallistos 12 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | E/M IX |
| PmbZ No. | 3607 |
| Titles | Basilikos spatharios (office) |
| Seal Sources | Zacos, G. and Veglery, A., Byzantine Lead Seals, vol. I (in 3 parts) (Basel, 1972). |
Kallistos 12 was basilikos spatharios; owner of a seal dateable to the first half of the ninth century: Zacos and Veglery 2074. The name and title read: Καλλίστῳ βασιλικῷ σπαθαρίῳ.
(Publishable link for this person: )