Watch List notes:

Caracalla (198-217), Sestertius, Rome, AD 210; AE (g 21,52; mm 31; h 6); M AVREL ANTONI - NVS - PIVS AVG, laureate head r. with drapery on l. shoulder, Rv. PONTIF TR P XIII COS III, Caracalla and Geta standing facing each other, sacrificing out of patera over altar; in background, Concordia, veiled; in ex. S C. RIC 452b; C 489 var.
Rare, expressive portrait. Delightful green patina and slightly flan crack, about extremely fine.