Titus, as Ceasar 72-73 AD, AR denarius (3.29g), Antioch. 

T. CAES IMP VESP PON TR POT, Laureate and draped bust right, with beard, seen from behind.
NEP RED (N retrograde), Neptune standing left, right foot on 
globe, holding acrostolium in right hand, sceptre in left, 

Note that the "N" in "NEP" is retrograde! 

RIC II 1561; RSC 122; BMC 516; CBN 321; RPC 1933.

Contributed by Stephen Album Rare Coins, April 2001.