Leo I (457-474) Imitative Half AR Siliqua (Silver, 0.64g, 15mm)
Obv: D N LEO PE - PRET (sic) AVG, Pearl-diademed, draped, cuirassed bust r., seen from front.
Rev: SAL / REI / PUI in wreath, in exergue [CONS*] (off flan).
Ref: RIC 650 (R)
The misspelling PEPRET for PERPET in obverse legend is typical of this issue, according to RIC