BRUTTIUM. Kroton. Circa 350 BC. 1 and 1/8 Obol (Silver, 12.5 mm, 0.82 g, 10 h). Kithara with four strings; in the field to left, ⁙; in the field to right, ⸬ (together = 9 = 9 hemitetartemoria/Ἡμιτεταρτημορια). Rev. Κ - Ρ/Ο within laurel wreath with ties at the bottom. Attianese 175 (same dies). HGC I, 1491 (this coin). HN III 2192. SNG ANS 429. Extremely rare. Toned. A most unusual denomination. Rough surfaces, otherwise, nearly very fine.
From the Dr. Paul Peter Urone Collection, ex Triton XI, 8 January 2008, 28.
This coin is generally termed a trihemiobol, despite the fact that the denomination is very clearly indicated on the obverse by the arrangement of nine dots easily seen there. In other words, this coin is meant to be "9 x something"; and the only 9 things it can contain are hemitetartemoria! At circa 0.09 per hemitetartemorion, what else can it be?