Leo IV the Khazar, with Constantine VI, 775-780. Miliaresion (Silver, 22 mm, 2.04 g, 12 h), Constantinopolis. IҺSЧS XRISTЧS ҺICA Cross potent set on three steps. Rev. LЄOҺ / S COҺST/AҺTIҺЄ Є / C ΘЄЧ ЬA/SILIS in five lines. DOC 3. SB 1585. A rare and interesting overstrike. Traces of overstriking, otherwise, good very fine.
This coin was overstruck on an Umayyad dirhem, with some parts of the undertype still visible.