Numantia, Hispania Citerior, Spain. AR denarius, King Arekorata, ca. 200 BC. 

Bare-headed male bust right, wearing pearl necklace, 
theta behind head.
Warrior on horseback right, holding spear, AREKA PXS in two lines 
in Celtiberian below. 

Mionnet I 410. 

Courtesy of www.denarios.org, Oct. 2012.