Marcian (Augustus in the East 450-457 A.D.) -  AE4 - 10.05mm, 1.34gr
Obverse - DN MARCIANVS PF AVG
Marcian, his pearl diademed, draped and cuirassed bust right.
Reverse - No legend,
Monogram of Marcian
Minted between 450 and 457 A.D.
Reference:
Sear, David R., "Roman Coins and their Values" (RCV 4th Revised Edition), p367, nr. 4327 or 4328, variety
Van Meter, D., "Handbook of Roman Imperial Coins", p328, nr 12
Quality: ???