I am always skeptical of the Apollonia Di-obol. Forgers have punched out tons of these in recent years! Not saying your coin is fake, but I would look at known fake dies. And your coin seems a bit light for my liking.
Here is mine! Made from authentic ancient dies.
Thrace,
Apollonia Pontika
Black Sea Region
struck s. 450 BC
AR Diobol 11.6 mm x 1.13 grams
Obverse: Front facing bust of Apollo.
Reverse: Anchor, flukes upward, A left, Crayfish right.
Ref: SNG BMC 169-173

Here is mine! Made from authentic ancient dies.
Thrace,
Apollonia Pontika
Black Sea Region
struck s. 450 BC
AR Diobol 11.6 mm x 1.13 grams
Obverse: Front facing bust of Apollo.
Reverse: Anchor, flukes upward, A left, Crayfish right.
Ref: SNG BMC 169-173






















