Watch List notes:

C. Vibius C. f. Pansa. AE Halved As (=Semis), 90 BC. Obv. Laureate head of Janus. Rev. Three prows right; before, [mark of value] and in exergue, [C] VIBI AVR (ligate) S. Cr. 342/7. AE. g. 6.42 mm. 24.50 About EF. A very interesting and attractive example. Emerald-green patina.