Bolskan, Spain AE half unit, 18mm, 4.94 g. 150-100 BC. 

Male bare head right, Iberian 'bo' behind head.
Horseman galloping right holding with couched spear, Iberian 'bolskan' below. 

SNG BM Spain 738-739; Villaronga ACIP 1416.

(Villaronga: Ancient Coinage of the Iberian Península,2011).

With permission of cngcoins.com, Jan. 2016.