Tarentum, Calabria, AR three-quarter obol or Tritetartemorion, ca 325-280 BC. 8 mm, 0.46 g. 

Horse's head right.
Horse's head right, thunderbolt behind head.

McGill 208 var (with additional letter M on reverse). Not in Vlasto.

With permission of Roma Numismatics Ltd The Anders Collection sale Part II, Lot 692, June 2023.