CNG 94, Lot: 362. Estimate $200. Sold for $515. This amount does not include the buyer’s fee.

ATTICA, Athens. Circa 400/390-294 BC. AR Tetartemorion (5mm, 0.17 g, 6h). Helmeted head of Athena right / Upward-facing crescent within incuse square. Kroll –; SNG Copenhagen 78–9. VF, toned. Good metal.

From the Daniel Koppersmith Collection. Ex Classical Numismatic Group 58 (19 September 2001), lot 501.

Unlike the 4th century tetradrachms, which can be easily broken into chronological groups based on style, the small fractional coins are not easily assigned to any specific periods, and appear to have been struck at various times throughout the century.