Watch List notes:

'ATYPICAL' COINS, Tyre type. Caracalla. AD 198-217. AR Tetradrachm (26mm, 10.19 g, 7h). Laureate, draped, and cuirassed bust right, seen from behind / Eagle standing facing, head and tail left, with wings spread, holding wreath in beak; murex shell between legs. Cf. Prieur 1737. Some porosity. VF. Extremely rare, this coin was not part of the Prieur collection at the time of his book's publication.

From the Michel Prieur Collection. Ex Classical Numismatic Group Electronic Auction 182 (20 February 2008), lot 185 (since cleaned).