Isaac II AE Half Tetarteron, Thessalonica mint. 

Obv: abbreviated version of O X AP-X MI (or similar) to 
left and right of facing bust of Archangel Michael, 
beardless and nimbate, wearing loros and holding jewelled 
sceptre (sometimes surmounted by trefoil) and cross on globe 
Rev: ICA AKI OC DE CPO TH C (or similar) to left and right 
of Isaac, crowned bust facing, wearing loros, holding cross-
tipped sceptre and akakia. 

Sear 2006.

Contributed by Online store of the Forum Ancient Coins, Jan, 2012