Caracalla, AE26, 3 assaria, of the Koinon of Thessaly. AD 198-217. 11.35 g.

AV MAR AVR ANTWNINOC, laureate, cuirassed bust right, star
in right field.
KOINON QECCALWN, Athena Itonia walking right, brandishing 
spear and holding shield on left arm. 

Burrer MA-G 28; Rogers 108; BCD 1420 (this coin).  

With permission of Nomos AG, BCD collection sale.