Leo IV the Khazar, with Constantine VI, Leo III, and Constantine V. 775-780. Æ Follis (21mm, 4 g). Constantinople mint. Struck 778-780. Leo IV and Constantine VI, each wearing crown and chlamys, seated facing on a double throne with curved arms; cross in field above, single pellet to left / Crowned facing busts of Leo III and Constantine V each wearing loros, set on horizontal bar; cross in field above, two pellets to left, three pellets to right; below, M above A, flanked by X and N.