Ionia, Kolophon AR Tetartemorion (1/4 Obol)
Silver, 0.30 g, 7.32mm
490-400 BC

Laureate head of Apollo right

TE monogram in incuse square. 
Note: These are amongst the oldest coins with the value marked 
on the reverse (TE = Tetartemorion).

Ref. SG 4343; Milne ANS NNM 96 (1941), 34.

Courtesy of TimeLine Originals (www.time-lines.co.uk), January, 2010