With Spence and KS...I have one of these...
Spain, Bolskan (Osca). Circa 150-100 BC. AE Unit (10.35 gm, 24mm).
Obverse: Bearded head right; dolphin behind.
Reverse: "BOLSKAN" in Celt-Iberian in exergue, rider on horse right, holding spear; star behind.
CNH 8; SNG BM Spain 734; SNG Copenhagen 325. VF.