Watch List notes:

Herennius Etruscus. As Caesar, AD 249-251. Æ As (25mm, 11.34 g, 12h). Rome mint, 4th officina. 5th emission of Decius, AD 251. Q HER ETR MES DECIVS NOB C, bareheaded, draped, and cuirassed bust right / PRINC-IPI IVVENTVTIS, Apollo seated left, holding branch and resting elbow on lyre. RIC II 170 (Decius). Dark green-brown patina, some roughness, scrape on reverse. VF. Very rare, one of only two in CoinArchives.

From the Summer Haven Collection. Ex Baldwin's 57 (23 September 2008), lot 181 (misattributed as RIC 169b; hammer £460).