Marcus Mettius, military lieutenant of Julius Caesar, 44 BC. AR denarius.

CAESAR DICT QVART, laureate head right; lituus behind head.
M METTIVS, Juno Sospita in galloping biga right, holding 
shield and wielding spear.

Mettia 3; Julia 31; Cr 480/2a; RSC 36; Syd 1057.

with permission of cngcoins.com. CNG 72, Lot: 1339 Rare. 
This is the first portrait of Julius Caesar to appear on his coinage.