AE Byzantine seal of Constantine (AD 10th century)
Obv: A rosace pattern formed around a central circle. Border of dots. Circular inscription along circumference beginning at seven o'clock: Κ(ύρι)ε βοήθει τῷ σῷ δούλ(ῳ).
Rev: Inscription of five lines. Border of dots.
Weight: 7.67 g.
Diameter: 25.43 mm.