Watch List notes:

Attica, Athens. 454-404 B.C. AR tetradrachm (24.8 mm, 17.01 g, 3 h). Helmeted head of Athena right wearing Attic helmet / AΘE, owl standing right with head facing, olive sprig and crescent behind; all within incuse square; interesting, possibly eastern geometric countermark within incuse square. Kroll 8; SNG Cop 31; Dewing 1591-8. Fine, large test cut.