Watch List notes:

PHOKIS, Federal Coinage. Circa 478-460. Obol (Silver, 10 mm, 1.01 g, 12 h). Φ - Ο Frontal bull's head. Rev. ΦΟ Boar's protome with two legs to right; all within incuse square. BCD 204 (this coin). Williams 88 (O 64/R 54) . "An exceptional specimen struck on a large flan and perfectly entered, with a lovely old collection toning". Extremely fine.
From the BCD Collection, Numismatica Ars Classica 55, 8 October 2010, 204, the collection of H. Zwager, van Zadelhoff 14 October 1985, M102, and from that of L. Forrer, Glendining & Co. 29 April 1954, 79 (part) .