Watch List notes:

MYSIA. Parium. Caracalla, 198-217. (Bronze, 33 mm, 16.22 g, 7 h), 212-217. AV K M AV ANTO-NINVS PIVS A Laureate, draped and cuirassed bust of Caracalla to right. Rev. C G I H P-ARI Caracalla on horseback galloping to right, holding couched spear. Apparently unpublished save for its auction appearance. Very rare. A large and curiously impressive piece, with a dark patina. Some smoothing in the fields, otherwise, extremely fine.
From a European collection, ex Lanz 164, 23 May 2017, 233.