Byzantine
Isaac II Angelus. First reign (1185-1195 AD). Constantinople mint.
AE Tetarteron (20.3mm 2.02g)
Obv: The Virgin Mary, orans, standing facing on dais; nimbate head of Christ Child on breast
Rev: IC AA K I on left, ΔEC Π O T HC on right, Isaac standing facing wearing crown, divitision and chlamys, and holding cross-tipped sceptre and akakia; hand of God at upper right
DOC 4; SB 2004