Watch List notes:

MACEDON. Sermyle. Circa 500-470 BC. Stater (Silver, 27 mm, 16.85 g). SERMYΛIAO-N Armored warrior, holding spear aloft in his raised right hand, riding a horse galloping to right; below, base formed of two horizontal lines enclosing a line of pellets. Rev. Quadripartite incuse square, with a cross-like ornament composed of five pellets at the center. AMNG III/2, 3, pl. XXI, 5 = de Hirsch 987 = Traité I 1668 (struck from the same dies). Rare. Well-centered, with attractive grey surfaces. Usual minor granularity and with an obverse lightly struck, otherwise, good very fine.
From the A. G. Collection, in Switzerland since the late 1980s.