Leo IV the Khazar, with Constantine VI, Leo III, and Constantine V. 775-780. AV Solidus (21mm, 4.43 g, 6h). Constantinople mint, 9th officina. Struck 778-780. Crowned busts of Leo III and Constantine V facing, each wearing loros; cross above, • between / Crowned busts of Leo IV and Constantine VI facing, each wearing chlamys; cross above, • between, Θ at end of legend. DOC 1b; Füeg 2.A.1; SB 1583. VF, area of roughness on reverse.