Leo I, AE 9mm of Constantinople, AD 457-474. 1.16 g. 

..LETNAR.., pearl diademed, draped, cuirassed bust right.
Two emperors (or emperor and empress), nimbate, seated 
facing; [cross above].

Cf. RIC X 724; cf. LRBC 2276; cf. MIRB 32.

With permission of cngcoins.com, July 2015
Estimate: $100