Konstantinos 338 | Prosopography of the Byzantine Empire |
| Floruit | VIII/IX |
| PmbZ No. | 4040 |
| Seal Sources | Gray Birch, W. de, Catalogue of Seals in the Department of Manuscripts in the British Museum (London, 1898) |
Konstantinos 338 was the owner of a seal dateable between the eighth and ninth century: Gray Birch 17889. The name reads: Κωνσταντίνῳ.
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