Watch List notes:

ISLANDS OFF CARIA, Kos. Circa 350-345 BC. Tetradrachm (Silver, 24 mm, 15.10 g, 6 h), struck under the magistrate, Kidaridas. Bearded head of Herakles to left, wearing lion's skin headdress. Rev. ΚΩΙΟΝ / ΚΙΔΑΡΙΔΑΣ Crab with club below; all within square border of dots. Apparently with an unpublished magistrate, but cf. Pixodarus 12 and 20 (both struck from the same obverse die, O5, but in the names, respectively, of ΘΕΟΔΟΤΟΣ and ΝΕΣΤΟΡΙΔΑΣ). Extremely rare, if not unique with this magistrate. Lightly toned, clear and well-centered. Minor die rust on the obverse, otherwise, extremely fine.

From a European collection, ex Nomos 18, 5 May 2019, 168.