Watch List notes:

ASIA MINOR, Uncertain southern mint. 5th century BC. AR Stater (19.5mm, 10.95 g, 9h). Crenelated city wall with three towers / Forepart of bull advancing right; monogram to lower right; all within incuse square. CNG 109, lot 190 (same dies); Roma XVI, lot 326 (Tarsos; same dies); otherwise unpublished. VF, some weakness to strike, test cut. Extremely rare, the third known.

This issue is also known as an undertype: CNG E-432, lot 82, where the full monogram is visible on the reverse.