Alexius I Comnenus AE21 Tetarteron. Thessalonica
Obv: Crowned facing bust of Alexius, wearing loros, holding cross-tipped sceptre and cross on globe. Tω KOMHN.
Rev: Jewelled cross with globe at each end, X in centre, on two steps, C-Φ-AΛ-Δ in the corners, clockwise from top left.
SB 1931. AD 1081-1118. 3.52g.