RIC 540 - Augustus/Caius on obverse- Joe Geranio photo collection.

RIC 1 540; RSC 2 (Caius Caes) , struck circa 12 BC, on obverse we see a youth bare head right, (Augustus or Caius)?  With CA ES AR across field, on reverse we see ornate candelabrum wi rams heads; all within floral wreath entangled with two bucrania and three paterae.  The big controversy comes into this issue with the young portrait on the obverse?  Is is Augustus or Caius?  I believe it’s Augustus because of the oak wreath being his signature?  But others point to Caius Caesar?  Joe Geranio text/ Julio Claudian Iconographic Association.