Watch List notes:

Gaius (Caligula), with Agrippina Senior. AD 37-41. AR Denarius (20.5mm, 3.81 g, 12h). Lugdunum (Lyon) mint. 2nd emission, 2nd phase, late AD 37-early 38. C • CΛESΛR • ΛVG • GERM • P • M • TR • POT, laureate head of Gaius (Caligula) right / AGRIPPINA • MAT • C • CAES • AVG • GERM, draped bust of Agrippina right. RIC I 14 (Rome mint); Lyon 170 (unlisted dies); RSC 2; BMCRE 15; BN 24-6. Old cabinet tone, light marks. Good VF. Well centered on a broad flan with an excellent portrait of Caligula.

Ex Stack's Bowers Galleries (9 January 2015), lot 228 (hammer $11,000).