Agrippa AE As, Neptune reverse

Agrippa (+12 BC). AE As (29 mm, 11.20 g), Rome, struck under Caligula 37-41 AD.
Obv. M AGRIPPA L F COS III, Head of Agrippa to left, wearing rostral crown.
Rev. S - C, Neptune standing facing, head turned left, holding small dolphin and trident.
RIC 58; BMC 161.

Dark green patina. Very fine.

From the Armin Mathis Collection, ex Gorny&Mosch 165 (2008), lot 1804.