Caracalla. 40-as

Caracalla; 198-217 AD, Rome, 207 AD, As, 10.08g. BMC-p. 349, citing C-435 (Paris). Obv: ANTONINVS - PIVS AVG Bust laureate r., with fold of aegis on front shoulder and behind neck. Rx: PONTIF - TR P - X - COS II around, S C in exergue, Roma or Virtus seated l. on throne, resting l. elbow on large oval shield, holding Victory in r. hand and parazonium in l. Ex Curtis L. Clay Collection; acquired from Frank Kovacs, Dec. 1994; ex Kovacs X, 1990, lot 458. Like the VIRTVS AVGVSTOR type, but with the reverse legend changed to PONTIF TR P X COS II, for Caracalla in 207 AD. Very rare; only the sixth specimen known to Curtis Clay, all six coming from the same pair of dies.It's quite unusual that all known specimens come from the same pair of dies; this could well mean that there are only these six in existence. F