Watch List notes:

MACEDON. Potidaia. Circa 525-500 BC. Tetrobol (Silver, 15 mm, 2.62 g, 3 h). Poseidon Hippios on horseback to right, holding a trident with his right hand and the reins with his left; below, seven-rayed star. Rev. Archaic style female head to right, wearing the Thracian alopekis headdress and a pearl necklace; all within an incuse square. Alexander period 1A, b1. SNG ANS 692 (same dies). SNG Lockett 1368 (this coin). Traité II, 1, 1641 and pl. LII, 9. Rare. Attractively toned. Some roughness, otherwise, very fine.
Ex Stacks 10 June 1996, 173, and from the collection of R. C. Lockett, VI, Glendining & Co., 12 February 1958, 1284 (part), ex Naville V, 18 June 1923, 1331 (bought by Baldwin's for Lockett for 12 CHF).