Watch List notes:

MACEDON, Chalkidian League. Olynthos. Circa 410-400 BC. Tetradrachm (Silver, 24 mm, 14.34 g, 3 h). Laureate head of Apollo to left. Rev. Χ-Α-Λ|ΚΙΔ|ΕΩΝ Kithara with seven strings; all within very shallow incuse square. BMFA 577. Robinson & Clement Group H, 22 (A18/P19). Bright, impressive and boldly struck, with a fine head of a slightly supercilious-looking Apollo. Extremely fine.
From a German collection, acquired in the 1990s on the Munich market.