This is BM 1867,0101.1124. It is die linked to one of the few (only?) authentic Republican dies ever found, now in the Madrid Collection.
The quaestor who issued this L. Fabius. L. f. Hispaniensis defected to Sertorius:
The location in which the die was found (near Orange) puts into question Crawford’s assumption that Fabius’ coins were struck in Italy.
Liv Mariah Yarrow 
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