Roman colonial? [solved]

Not much left on the obverse but the reverse isn't too bad despite the losses.

D.- 20mm
W.- 3.25 grams
Metal-Copper or bronze

Obverse: Bust right laureate & draped
________NTO

Reverse: Turreted personification right
COIΛΛETANTO-the two lambdas might be an M.

try:
BMC 22 Caracalla, AE19 of Carrhae, Mesopotamia. AD 198-217. 4.38 gr. [M ANTON]INVS P F AVG, laureate head right / COI MET ANTO-NINIANA A[VR ALEX], turreted and veiled head of Tyche right. BMC 22; SNG Cop 177.Text

http://www.wildwinds.com/coins/ric/caracalla/_carrhae_BMC_22.jpg

Thanks numisquare. As per usual, another attribution that is spot on. This one is another 30 year quest. Wish I new your method...I have got another that may prove more difficult...or maybe not.

Best regards,
LHNUMIS