Leo I - Augustus of Imperium Romanum from 457 AD to 474 AD
Flavius Valerius Leo Augustus was Eastern Roman Emperor from 457 to 474. He was a native of Dacia Aureliana near Thrace, which prompted his nickname 'Thrax' - the Thracian.

As his 20 year reign indicates, he was a capable ruler and worked tirelessly to aid the struggling western part of the Roman Empire. He is also notable for being the first Emperor to legislate in Greek rather than in Latin.

He died of dysentery at the age of 73 on 18 January 474, and was succeeded by his grandson Leo II.
Leo I
Emperor Leo I "the Thracian" of the Roman Empire (East)

Epithet: Thrax ("the Thracian")

(1) Leo I 462-466 AD
Obverse: diademed, helmeted and cuirassed 3/4 facing bust, spear over shoulder; D N LEO PE_RPET AVG
Reverse: Victory standing left with long cross; VICTORI_A AVGGG B / * / CON OB
Ref: RIC X 605, DOC 528
(2) Leo I | Verina AD 467-472
AE Nummus Unknown mint
Obverse: DN LEO (?), Head of Leo right
Reverse: Verina standing, facing, holding a transverse scepter "b-E"
Ref: RIC X 713-718