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This is an ancient Iron Age Celtic silver stater of the British Durotriges Tribe. It was minted between the mid-1st century BC to the mid-1st century AD with the invasion of the Romans.
Obverse: Devolved head of Apollo right, crude head representation with wreath, cloak and crescents,
Reverse: Disjointed horse left; pellets above, pellet below, pellet in lozenge above tail, crude horse representation of disjointed pellets, lines, and crescents.
DATE: 58 BC - 45 AD
SIZE: 19mm dia
WEIGHT: 3.7 grams
ATTRIBUTION: ABC 2157; VA 1235-1; M 317; S.366
PROVENANCE: Private collection. Bicester, United Kingdom.