Watch List notes:

Greek PB Sling Bullet. Circa 4th-1st century BC. Coiled serpent left / Uncertain inscription. For similar, cf. Paunov & Dimitrov, 'New data on the use of war sling in Thrace' in Archaeologia Bulgarica 3, 2000, pg. 50, fig. 5a. 31.40g, 29mm x 16mm.

Condition as seen; dark patina.