Hadrian. AR Denarius. 19mm. Rome mint. Struck ca AD 119-125. 

IMP CAESAR TRAIAN HADRIANVS AVG, laureate head right.
PM TR P COS III, galley right, no oarsmen: mast slanting forwards with flag 
and sails attached, under full sail, arched cabin under a curved aplustre 
at the stern. 

RIC II 112; RSC 1173.

With permission of cngcoins.com, Oct 2013.

Note: Many sellers do not look closely at coins of this type, to check 
whether the galley is sailing left or right. Important characteristics are
- the position of the covered pilot's cabin or seat, which is open in the 
direction of travel (otherwise he wouldn't be able to pilot the galley, right?)
- the position of the rudder.
- the position of the prow extension with ram (if any) beneath it.

On Coinarchives Pro, from over 20 coins found by the search, only one coin 
(this one) was a correctly identified RIC 112  - all the others were the 
more common RIC 113 - all wrongly described as RIC 112, galley sailing right.