Caius Julius Casear, 30 BC, silver denarius, 16-19 mm,

bare head right between laurel branch and caduceus. 
L. LIVINEIUS above bull butting right, REGULUS in ex. 

Cr. 494/24; Syd. 1106; BMC 4274; Bab. 57; RSC 27. 

With permission of numislanz.de, Auktion 102, lot 432