Byzantine
Alexius I Comnenus (1081-1118 AD). Thessalonica
AE Tetarteron (18.4mm 3.26g)
Obv: Crowned facing bust of Alexius, wearing loros, holding cross-tipped sceptre and cross on globe
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.
DOC 40; Sear 1931.