The Octassarion denomination
The octassarion was a bronze denomination worth 8 asses - assarion in Greek.

It was commonly struck by Roman Provincial mints, and was not struck to a standard weight but rather to some local standard. It was simply a coin worth 8 of the local basic coin denomination.
Octassarion

Obverse: Laureate, draped and cuirassed bust of Trebonianus Gallus right from behind confronting radiate, draped and cuirassed bust of Volusian left; AΥTOK K Γ OYIB TΡEB ΓAΛΛOΣ CAI OΥOΛOΥCIA_NOC CEB·
Reverse: Facing, seated statue of Tyche in tetrastyle temple with arched central bay; ram right, above; river-god swimming right, below; ANTIOXEΩN__ MHTΡO KOΛΩN / Δ_E / S C
Ref: BMC Galatia 656 var. (obverse legen...