1) The treasury or pay chest 
Aerarium (from Latin `aes`, in its derived sense of `money`) was the name (in full, `aerarium stabulum` - treasure-house) given in Ancient Rome to the public treasury, and in a secondary sense to the public finances. == Aerarium populi Romani == The treasury contained the monies and accounts of the state finances. It also held the standards ...
treasury of ancient Rome, housed in the Temple of Saturn and the adjacent tabularium (record office) in the Forum. Under the republic ( 509–27 ) it ... [2 related articles]
Treasury. pay chest.
The treasury or pay chest. 
the state treasury in ancient Rome.