The rev. type was identified by Grant as a silphium plant. The coin was therefore attributed to Cyrenaica and the existence of a fleeting colony adduced. This attribution was rejected by Buttrey (see p. 227). The coin is closely related to 5401. C. Stannard, ‘Overstrikes and imitative coinages in central Italy in the late Republic’, in A. Burnett et al., Coins of Macedonia and Rome. Essays in Honour of Charles Hersh (London, 1998), pp. 209-29, at p. 217 no. 38 identifies the undertype as a quadrans of Rome. This implies an origin from the western part of the Roman world, if not indeed somewhere in central Italy.