MESOPOTAMIA. Carrhae. Caracalla, 198-217. Tetradrachm (Billon, 26 mm, 12.86 g, 1 h), 215-217. ΑΥΤ•Κ•Μ•Α ΑΝΤΩΝЄΙΝΟC [C]ЄΒ Laureate head of Caracalla to right. Rev. •ΔΗΜΑΡΧ•ЄΞ ΥΠΑ•ΤΟ•Δ• Eagle with spread wings standing facing on facing head of a bull, head to right and holding wreath in beak. Prieur 820. A few light marks on the obverse, otherwise, about extremely fine.