Watch List notes:

Anonymous. AE As, 157-156 BC. D/ Laureate head of Janus; above, I. R/ Prow right; before, I; below, [ROMA]. Cr. cf. 197-198B/1b. AE. g. 24.95 mm. 30.00 An attractive example of this rare issue. Lovely emerald green patina. Good VF.

Crawford warns that supposed examples of this issue are often mis-read pieces where a moneyer's mark above the prow has been removed by wear.