Watch List notes:

Claudius. AD 41-54. AV Aureus (18mm, 7.45 g, 9h). Rome mint. Struck AD 50-51. Laureate head right / S P Q R/ P P/ OB C S in three lines within wreath. RIC I 53; von Kaenal Type 42; Calicó 383. Fair, toned, small banker's mark on obverse.

Ex Classical Numismatic Group Electronic Auction 180 (23 January 2008), lot 161.