As - Augustus M MAECILIVS TVLLVS IIIVIR A A A F F F S C

Maecilius Tullus served as one of the tresviri aetere argento auro flando feriundo — the board of three magistrates responsible for overseeing bronze, silver, and gold production at Rome — during a period when Augustus was methodically rebuilding the Roman mint infrastructure after decades of civil war coinage chaos. The tresviri monetales of this era were typically young men of senatorial ambition using the post as an early career stepping stone, and Maecilius Tullus is otherwise unattested in the historical record beyond this series.

The senatorial S C authorization on aes coinage reflects a careful political arrangement Augustus maintained: the Senate nominally controlled bronze while he controlled precious metals.