Aigina Stater circa 480-457, 21 mm, 12.11 g.

Sea turtle, head in profile, with ‘T-back’ design on shell.
Rev:   Large square incuse with skew pattern.

Meadows, Aigina, Group IIIa. Milbank Period III.
Dewing 1679. SNG Delepierre 1759ff. HGC 6, 448.