Follis - Arcadius SALVS REIPVBLICAE, Rome

Arcadius ruled the Eastern half of the empire while his brother Honorius held the West, yet this coin was struck at Rome for the Eastern emperor — a routine consequence of the administrative machinery that continued minting for both courts regardless of which Augustus nominally governed a given territory. The SALVS REIPVBLICAE type had been in continuous production since the 380s and was effectively the workhorse bronze of the late empire, struck in enormous quantities across a dozen mints simultaneously.

By 395 the weight standard had already collapsed well below its original target. This example at 1.11g sits at the lower end even for the degraded series.