Watch List notes:

Ionia, Erythrai(?). Ca. 500-480 B.C. AR tetartemorion (4 mm, 0.09 g). Rosette on raised disk / Cruciform incuse with pellet in center and in each arm. SNG Kayhan 740; Klein 433. Good VF. 

At 0.09 g, this is probably the lightest Greek fraction this cataloguer has handled in twenty-five years.