Watch List notes:

Agrippa, As struck under Caligula, Rome, AD 37-41; AE (g 10,91; mm 28; h 6); M AGRIPPA L - F - COS III, head l., wearing rostral crown, Rv. Neptune cloaked standing l., holding small dolphin and trident; in field, S - C. RIC 58; C 3.
Strong portrait, dark green patina, good extremely fine.