Sekaisa, Spain, AE18 Half Unit. Mid 2nd century BC. 4.24 g.

Bare male head right, S before neck.
Horse galloping right, with reins trailing behind; Iberian SEKAISA below. 

ACIP 1550. 
Very Rare.

With permission of Roma Numismatics E-Sale 52, Lot 32, Jan 2019