Watch List notes:

GAUL, Massalia. 490/485-470 BC. Hemiobol (Silver, 8 mm, 0.55 g), Milesian standard, 'Auriol'. Boar's head to right. Rev. Irregular incuse square. Furtwängler R 26. Maurel 66. Pozzi 7 (this coin). Rare. Attractively toned. Minor traces of die rust on the obverse, otherwise, about extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions and from the collection of S. Pozzi, Naville I, 4 April 1921, 7.