hola,aqui esta una de la pagina wildwind.
http://www.wildwinds.com/coins/ric/caligula/RIC_0054ADD.jpg
RIC 54ADD Caligula AE Quadrans. Rome mint, Struck 1-24 January 41 AD. C CAESAR DIVI AVG PRON AVG, pileus between S C / PON M TR P IIII P P COS QVAT, legend around R C C. RIC I (first ed.) 41; Cohen 8.