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| as (coin) | |
|---|---|
| Name | As |
| Country | Roman Republic |
| Unit | as (plural: asses) |
| Value | 1 uncia (later reduced) |
| Composition | bronze, copper, later copper-alloy |
| Years of minting | ca. 4th century BC–3rd century AD |
as (coin) is an ancient Roman bronze coin that served as a principal unit of account and small-denomination circulation medium in the Regal and Roman Republic periods and into the Roman Empire. Originally a large cast bronze piece used in the coinage reforms traditionally attributed to figures linked with the Decemvirs and the reforms of the early Republic, the as evolved in weight, size, and metal composition in response to fiscal pressures associated with events such as the Punic Wars and policies of emperors like Augustus and Nero. Surviving examples appear in hoards and excavations across the Italian Peninsula, Cisalpine Gaul, Sicily, and provinces from Hispania to Asia Minor.
The name "as" derives from Old Latin and Italic currency terminology, cognate with Oscan and Umbrian language words for a unit of weight or coin; scholars connect it to the Latin word ase and the measure unit uncia, linking to units used by Etruscans and Greek colonies in Italy such as Cumae and Neapolis. Classical authors including Cicero, Pliny the Elder, and Varro mention the as in legal and economic contexts, tying the term to monetary laws like the Lex Aebutia era reforms and to accounting practices recorded in Roman inscriptions from Capua and Ostia Antica.
The as appears in literary tradition tied to early Republican reforms and the shift from an aes rude system to cast coinage in the 4th century BC, contemporaneous with events like the Gallic sack of Rome (390 BC) and the subsequent military and fiscal reorganizations. During the First Punic War and particularly the Second Punic War the as underwent debasement and size reduction as documented alongside magistracies such as the Censor office and mint magistrates. Imperial reforms under Augustus standardized small change and shifted striking techniques; later emperors including Trajan and Hadrian maintained copper coinage traditions even as silver denarii and gold aurei dominated larger transactions. Numismatic chronologies reference coin series from magistrates like the moneyers (tresviri monetales) and regional issues minted in cities such as Tarentum, Syracuse, and Lugdunum.
Early asses were large cast discs marked with control stamps and symbols like the prow of a ship, the bust of Roma, and various magistrate monograms appearing alongside iconography used on contemporaneous Roman Republican denarii, victoriati, and sextans. Denominational relations tied the as to fractions: the uncia (1/12), the semis (1/2), the triens (1/3), and the quadrans (1/4); these fractional names also appear in coin types related to aes grave series, and later to struck coinage under the Empire where names persisted in accounting despite metal and weight changes. Portraiture and reverse motifs sometimes referenced military victories like the Battle of Zama or civic institutions such as the Senatus Consultum in dedicatory legends.
Metallurgical composition shifted from heavy cast bronze (aes grave) to struck copper and copper-alloys with reduced weight, reflecting access to metal supplies from regions like Carthage and Hispania Baetica and the impact of wartime requisitions described by historians such as Polybius. Techniques evolved from sand or clay casting moulds used at early mints to hammering and later die-striking methods comparable to those employed at the mint of Rome and provincial mints in Alexandria and Antioch. Scientific analyses of coin surfaces reveal patination, metallurgical trace elements associated with ores from Etruria and Sardinia, and evidence of workshop practices linked to moneyer families and official mint apparatus.
As the basic unit of small change, the as facilitated everyday transactions in markets like the Forum Romanum, tax payments to collectors operating under publicani contracts, and soldier pay scales tied to legions such as Legio X Equestris before reforms by commanders like Marius. Its relative value vis-à-vis the denarius and aureus shifted over centuries, with accounting tables preserved in inscriptions and commentaries of Pliny and Cicero indicating exchange rates and price controls during crises such as the Third Century Crisis. Hoard evidence and price edicts show the as functioning alongside provincial currencies like the Greek drachma and regional bronze issues, often used in localized retail and grain distributions managed by municipal bodies in cities like Pompeii.
Numerous municipia and coloniae issued local asses and ass-like bronze coinage: Carthage-influenced types in Sicily, Hellenistic-style bronzes from Magna Graecia mints, and Gallic provincial series produced at Lugdunum and Lutetia. Iconographic programs sometimes incorporate local cults and magistrates of cities such as Tarentum and Paestum, while imperial provincial issues from Asia (Roman province) and Bithynia reflect Roman titulature and local workshop signatures. Colonial coinages struck under the authority of officials like the triumvir monetalis often bore combinations of Roman and regional imagery, attesting to cultural exchange across the Mediterranean networks dominated by ports like Ostia and Ravenna.
Significant hoards containing asses have been recovered from sites including Herculaneum, Pompeii, the Oswaldtwistle hoard-type finds in Britannia, and multiple deposits from Tuscany and Campania that provide stratigraphic dating for typologies. Excavations in urban centers such as Rome and Neapolis yield assemblages showing circulation patterns, while shipwrecks off Antikythera and Gulf of Naples contexts deliver mixed cargoes of bronze and silver linking Roman coinage to Mediterranean trade routes and maritime loss events like those recorded in amphora studies. Metal-detector finds and museum collections across institutions like the British Museum, Museo Nazionale Romano, and Capitoline Museums underpin catalogues used by numismatists to reconstruct die links and production sequences.