Image rights: wildwinds.com

     Ionia, Magnesia ad Maeander, mid-4th c. BC. AR Tridrachm (24 mm,
     10.89 gr). 
     Obv: Armed horseman rt.
     Rev: Horned bull butting l. within meander, wheat ear behind.
     MAGNE in field above, KALLIANAS KALLIKRATOU in ex.

Von Aulock 2033 (Sear 4476 misdescribes this weight/denom as a didrachm).
Ex Frank Kovacs.