37-41 AD., Gaius (Caligula) for Agrippa, Rome(?) mint, As, RIC 58.

Gaius (called Caligula) for Agrippa, Rome(?) mint, 37-41 AD.,
Æ As (26-27 mm / 11.35 g),
Obv.: M AGRIPPA L – F COS III , head of Agrippa l., wearing rostral crown. unusual style.
Rev.: S - C , Neptune, cloaked, standing l. holding small dolphin and trident.
RIC (Gaius) 58 ; C 3 ; BMC (Tiberius) 161 ; CBN (Gaius) 78 .

Agrippa was the grandfather of Gaius, died 12 BC.