Watch List notes:

The Roman Empire

Claudius, 41 – 54. Denarius circa 41-42, AR 3.73 g. TI CLAVD CAESAR AVG GERM P M TR P Laureate head r. Rev. EX S C / OB CIVES / SERVATOS within wreath. C 35. BMC 18. RIC 16. CBN 33.
Very rare. A fine portrait and a light iridescent tone, an almost invisible
banker's mark on obverse, otherwise extremely fine

Ex Giessener Münzhandlung sale 96, 1999, 454.