Watch List notes:

BOEOTIA, Federal Coinage. Circa 220s BC. (Bronze, 18 mm, 4.57 g, 6 h). Head of Demeter or Kore (Persephone) facing, turned slightly to right, wearing corn-wreath. Rev. ΒΟΙΩΤΩΝ Poseidon, nude, standing left, resting right foot on rock and leaning on trident held in right hand. BCD Boiotia 100. SNG Copenhagen 384. Brown patina with earthen-green highlights, and traces of overstriking. Nearly very fine.
From the collection of J. Aiello.

Coins of this issue are often overstruck on bronzes of king Antigonos II Gonatas.