The bronze centenionalis coins were the attempts of Constans and Constantius II to reintroduce a large bronze coin between 320 and 340 AD, as the follis had by shrunk dramatically. The type of coin it was is uncertain, but numismatists have categorized large bronze coins of the above date under this denomination; the centenionalis, did not last long. By the end of Theodosius the Great's rule, only smaller varieties of bronze coins were minted. Roman currency Byzantine coinage
The argenteus was a silver coin produced by the Roman Empire from the time of Diocletian's coinage reform in AD 294 to ca. AD 310, it was of similar weight and fineness as the denarius of the time of Nero. The coin was produced at a theoretical weight of 1/96th of a Roman pound, as indicated by the Roman numeral XCVI on the coin's reverse. Argenteus, meaning "of silver" in Latin, was first used in Pliny's Natural History in the phrase "argenteus nummus"; the 4th-century historian Ammianus uses the same phrase, however there is no indication that this is the official name for a denomination. The Historia Augusta uses the phrase to refer to several fictitious coins. Edict on Maximum Prices Numismatics Roman currency Solidus
The uncia was a Roman currency worth 1/12 of an as. By derivation, it was the name of a bronze coin valued at one-twelfth of an as produced during the Roman Republic; the uncia started as a Roman-Oscan weight of about 23 grams for a 273 gram pound, with Attic weight issues of about 27 grams under the libral standard for a 327 gram pound and was produced towards the beginning of Roman cast bronze coinage. Obverse types of the uncia include a knucklebone, a barleycorn, the helmeted bust of Roma. In imperial times the uncia was revived under Trajan and Hadrian; this coin weighed about 0.8 -- 1.2 grams. It featured the bust of the emperor on the obverse with no inscription and "SC" in a wreath on the reverse. If this issue belonged to the imperial system, meaning it was not a provincial piece, it would be an uncia; this issue may have been made only for circulation in the East. Duella Roman currency Roman Republican coinage
The quadrigatus was a medium-sized silver coin produced by the Roman Republic during the 3rd century BC. The obverse featured a young janiform bust and the reverse featured Victory driving a quadriga, giving the coin its name, with the inscription "ROMA" below; the coin weighed about 6.8 grams, consistent with the weight of a south Italian Greek didrachm. It was minted for a number of years until shortly before the introduction of the denarius. Gold coins of similar style were issued at this time which featured the same obverse type as the quadrigatus and the reverse type of two soldiers performing an oath over a third soldier holding a pig, with the inscription "ROMA" below; the choice of Janus for these coins is believed to coincide with the closing of the doors of the Temple of Janus, indicating the absence of warfare, a rare occasion. Michael Crawford, has suggested that the janiform head represents the Dioscuri, since Janus is a mature and bearded figure. Roman-era historians such as Livy and Plutarch refer to these early coins as denarii, but modern numismatic references consider these coins as anonymous Roman silver, produced before the standardization of the denarius around 211 B.
C. The name quadrigatus comes from the quadriga or four-horse chariot on the reverse, the prototype for the most common designs used on Roman silver coins for the next 150 years; the victoriatus was a coin of the same fabric, valued at half a quadrigatus. Roman currency
The victoriatus was a silver coin issued during the Roman Republic from about 221 BC to 170 BC. The obverse of the coin featured the bust of Jupiter and the reverse featured Victory placing a wreath upon a trophy with the inscription "ROMA" in exergue; the coin weighed about 3.4 grams, meaning that it was half the value of the quadrigatus, a coin weighing 6 scruples, by this time no longer produced. The victoriatus was made of a more debased silver than the denarius, introduced at about the same time. Hoard evidence indicates that the coin circulated in southern Italy and Gaul, indicating that the coin was intended as a replacement for the drachma or half-nomos instead of as part of the normal Roman coin system; when first issued the victoriatus had a value of about 3/4 of a denarius, however when the quinarius was reintroduced in 101 BC with a similar type, it was valued at 1/2 a denarius. This indicates that victoriati that were still in circulation at this time were worn and considered to be worth only half a denarius.
The reintroduced quinarius was produced for Cisalpine Gaul, where the victoriatus and imitations were popular. The reintroduced quinarius may have continued to be called a victoriatus, although there is no written evidence of this; the name victoriatus is an ancient term, attested by inscriptions. The coin was known as a tropaikon among Greek speakers. Roman currency Michael Crawford Roman Republican coinage John Melville Jones, A Dictionary of Ancient Roman Coins, London 1990
The triens was an Ancient Roman bronze coin produced during the Roman Republic valued at one-third of an as. The most common design for the triens featured the bust of Minerva and four pellets on the obverse and the prow of a galley on the reverse, it was not a common denomination and was last struck c. 89 BC. In Frankish Gaul, the term "triens" was used for the tremissis, since both terms meant "a third". Roman currency
The miliarense was a large silver coin, introduced to the late Roman monetary system in the early 4th century. It was struck with variable fineness with a weight between 3.8 and 6.0 grams, a diameter of c. 23–24 mm. The miliarense was struck first under Constantine the Great. There were two kinds of miliarense coins: heavy, it took 14 heavy miliarensia and 18 light miliarensia to equal one gold solidus. Miliarensia are desired by numismatists of the present day, due to both the rarity of the denomination and the exquisite execution of both bust and reverse types, which led to many being used as pendants or mounted in antiquity. A variant of the original denomination was revived in the Byzantine silver coinage from the 8th to the 11th centuries. Roman currency Byzantine coinage