MESOPOTAMIA. Carrhae. Caracalla, 198-217. Tetradrachm (Billon, 23 mm, 13.31 g, 6 h), 215-217. ΑΥΤ Κ Μ Α ΑΝΤΩΝEΙΝΟC CEΒ Radiate head of Caracalla to right. Rev. ΔHMAPX EΞ YΠATO Δ Eagle standing facing, with wings spread, head and tail to right with wreath in beak; crescent between legs, star in left field, two pellets in exergue. Prieur 830. Surfaces slightly grainy, otherwise, about extremely fine.