Watch List notes:

MACEDON. Sermyle. Circa 500-470 BC. Stater (Silver, 26.5 mm, 17.12 g). SERMYΛIAO-N Armored warrior, holding spear aloft in his raised right hand, on horseback galloping to right; in field to left, large pellet; below, base formed of two horizontal lines enclosing a line of pellets. Rev. Quadripartite incuse square. AMNG III/2, p. 107, 2 and pl. XXI, 4 = Traité II, 1, 1667 and pl. LIII, 2 (same obverse die). De Hirsch 987. Prospero, New York Sale XXVII, 2012, 288 (same dies). Struck on a broad flan and with greyish patina. Some rough surfaces, otherwise, good very fine.
From the A.G. Collection, in Switzerland since the early 1990s.