Watch List notes:

MACEDON, king of, Archelaus, (413-399 B.C.), silver stater (didrachm), (10.51 g), obv. horseman wearing a kausia and chlamys holding two long spears, on horseback galloping left, rev. AP-XE-**LAO around, forepart of a goat to right, head reverted, all within a linear square, (S.1494, Westermark, 'The Staters of Archelaus, A die study' Group 1 (obv. 6, rev.6), AMNG III, Pl.XXIX, 10 [same reverse die], SNG ANS 64, SNG Lockett 1389, HGC 3, 794 [R2]). Good very fine, softly struck, very rare.

Ex CNG Triton VI, January 14-15, 2003 (lot 146) with ticket.
Last example noted reported sold on Coin Archives was in 2014 for $7000 US, it was in similar condition.