Watch List notes:

THRACO-MACEDONIAN TRIBES, Orreskioi. Circa 500-480 BC. Obol (Silver, 10 mm, 1.00 g). Bearded centaur in the 'running-kneeling' posture to right, his head turned back to left to look at a kantharos held in his right hand. Rev. Quadripartite incuse square. AMNG III, p. 134, 6 and pl. XXVI, 3 = HPM p. 38, 2 (ascribed to the Letaioi). Extremely rare. A beautiful example, well-struck in high relief and nicely toned. Nearly extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, ex Bank Leu 48, 10 May 1989, 148 and from the collection of Leo Mildenberg.