Nerva, brass Dupondius (13.28 grams; 28.81 mm.) Rome. 98 AD. 

IMP NERVA CAES AVG GERM P M TRP II, radiate head right
(IMP II) COS IIII P P, Fortuna standing left holding rudder & 
cornucopiae. 

RIC 105cf (unlisted as dupondius). (Note: the reverse legend in 
RIC for bronzes of 98 AD is incorrect and should read COS IIII, 
not COS III).

Contributed by Dane for TimeLine Originals (www.time-lines.co.uk),
November 2008