Macedon, Chalkidian League, (420-392 B.C.), silver tetradrachm, 23mm, (14.10 g), Olynthos, obv. laureate head of Apollo to left of the finest classical style, rev. XAL[KIDE]WN around, kithara with seven strings; all within very shallow incuse square. (S.1425, Robinson & Clement Group L,  [A43/P57] unlisted for die combination, cf.SNG ANS 532). With an attractive head of Apollo of excellent Classical style, toned, nearly extremely fine, minor surface roughness, very scarce.
Ex Brian Bolton Collection and previously from Antiquarius New Zealand, July 2016.