Watch List notes:

The Roman Empire
Claudius, 41 – 54

Cistophoric tetradrachm, Ephesus Ioniae 50-51, AR 11.55 g. TI CLAVD CAESAR AVG P M TR P X IMP XIIX Laureate head of Claudius r. Rev. AGRIPPINA AVGVSTA CAESARIS AVG Draped bust of Agrippina Junior r. C 2. BMC 234. RIC 117. CBN 295. RPC 2223.
Rare. Two attractive portraits and a light iridescent tone,
about extremely fine / good very fine

Ex Tkalec, 19 February 2001, 258 and NAC 72, 2013, 607 sales.

This issue is from the small mintage of eastern coinage of a dynastic nature including both Agrippina and Nero. The next two lots would follow this same theme. A difficult coin type to find this nice. MSG.