Watch List notes:

GREECE. Massalia. Obol 425-400 BC. Obv. ΜΑΣΣΑΛΙΩΤΑ-Ν. Horned head of Lacydon to right. Rev. Wheel with four spokes, M in one quarter. OBM 6-; Chevillon, GNCP 2017. AR. 0.76 g. XF+
Published by Chevillon in Annales du Groupe Numismatique du Comtat et de Provence, octobre 2017, pp. 22-24. Nice coin of fine style.