Without a clear magistrate's name an "exact" reference is impossible.
However, the links provided by Altamura are of similar coins, although
the dates are not all accurate. The first one is the better and perhaps
most accurate one of the four.
Perhaps the best reference for this
type is the
Numismatic Chronicle of
1999, in an article by my colleague Dr Philip
Kinns. Therein these are
described as being "
Type F", dating to c.202-133 BC.
Ref:
SNG Cop. 265ff.
SNG Kayhan 318. Yours is quite small for the issue, both
flan and
weight.
Note, however, that the new book on this precise coinage is due to be
published "soon", perhaps even this year!
- Walter
