VIDARBHA: River Bena type, 3rd century BC, AE square unit (7.00g), Pieper-494 (this piece, only example published), punchmarked symbols: bull, Ujjain symbol, river line, lotus, and legend benaka (for the river), uniface, VF, RRR, ex Wilfried Pieper Collection. For #494, Pieper incorrectly attributed this piece to Satakarni, now corrected by Pieper after further research.
Estimate: 200-300 USD