Watch List notes:

Euboia, Chalkis. ca. 338-308. AE 16 (16.0 mm, 2.74 g, 1 h). Diademed and draped bust of Hera facing, slightly right / XAΛ, eagle flying left, holding serpent in its claws. Picard Emission 20; BCD 167. VF, some edge damage. Rare. 

The eagle flying left variety is very rare compared to the right facing types.