Byzantine
Leo III the "Isaurian", with Constantine V (717-741 AD). Constantinople.
AE Follis (24.6mm 5.61g)
Obv: LEOn S COnST. The busts of Leo, with short beard, and Constantine facing, both wearing chlamys and crown with cross and holding akakia.
Rev: Large M cross above, XXX in left field and NNN in right field; A below.
Sear 1516.