Agrippa AE As, Neptune reverse

Agrippa (+12 BC). AE As (29 mm, 9.82 g), Rome, struck under Caligula 37-41 AD.
Obv. M AGRIPPA L F COS III, head of Agrippa left, wearing rostral crown. Rev. S - C, Neptune standing left, holding small dolphin and trident.
RIC I 58.

Very fine.