Basil I and Constantine (367-886) AE Follis (Bronze, 6.57g, 30mm) Constantinople, c. 868-870,
Obv: +bASILIOS [S COnST AUGG] Facing half-length figures of Basil and Constantine, each wearing crown and chlamys, and holding labarum between them.
Rev: +bASIL / S COnSTAn / TInOS S En TO / bASILEIS / ROmAIOn in five lines
Ref: Sear 1721.