Watch List notes:

CORINTHIA. Corinth. Circa 450-415 BC. Trihemiobol (Silver, 11 mm, 0.65 g, 7 h). Ϙ Pegasos, with curved wing, flying to left; above right, trident to left. Rev. T-P/I-H Gorgoneion facing with tongue outstretched; all within incuse square. BCD Corinth 47-48 (same dies). Berend, Reflexions, pl. 2, 7 (this coin). BMC 105 (same dies). Jameson 2498 (this coin). SNG Copenhagen 25. Toned, well struck, and with a particularly strong reverse. Porous, otherwise, extremely fine.
From the "Collection sans Pareille" of Ancient Greek Fractions, acquired prior to 1983 and from the collections of L. Mildenberg and R. Jameson.