Tanagra, Boeotia, AR obol. 10mm, 0.95 g.

Boetian shield.
T-A to left and right of forepart of horse right within incuse concave circle. 

Sear SG 2451; BCD Boiotia 267 (this coin); Hoover HGC 1291. 

With permission of cngcoins.com, auction 346, Lot 83, March 2015.
Ex BCD Collection (Triton IX, 10 January 2006), lot 267.