Obverse: Head of Apollo.
Reverse: Biga.
Identification

Friedberg, A. L., Friedberg, I. S., Friedberg, R. (2017). Gold coins of the world: From ancient times to the present (9th ed.). Williston, VT: Coin and Currency Institute
number: 23a
Main data
Denomination: Double Stater
Value: 2
Currency: Stater
Year: BC 300 - BC 1 (Undated)
Type: Regular
Minting
Minting type: hammered
Parameters
Material: Gold