Fly series.     AE Semis, Rome 205 BC.   Obv.    Laureate head of Saturn right; behind, S.        Rev.   Prow right; above, fly; to left, S; below, ROMA.     Cr. 159/4.     18.35 g.   29 mm.      RRR.  Extremely rare, seldom offered. Green patina with dark brown hues.    About VF/VF.