Roman
Coinage
For nearly five hundred years after the foundation of the
city the Romans coined no metal except copper.
If any gold or silver pieces were in circulation, they must have been of
foreign stamp.
The ordinary copper coins of the Republic were six in
number, each being distinguished by a particular device, which is preserved
with almost perfect uniformity. The
names of these coins were:
on the obverse a head
of
1. As Janus
2. Semis, the
half As
Jupiter
3. Triens, one third of the As Minerva
4. Quadrans, quarter As Hercules
5. Sextans,
the half Triens
Mercury
6. Uncia, one twelfth of the As Minerva
The
device on the reverse is the same in all, being a rude representation of the
prow of a ship. On the As we find the
numeral I, on the Semis the letter S, while on the rest round dots indicate the
number of Unciae; thus the Triens is marked oooo, the Quadrans ooo, the Sextans
oo, and the Uncia o.
Many of them have the word ROMA, and it gradually
became common for the magistrate under whose inspection they were struck to add
his name.
Silver Coinage.
According to Pliny, silver was
first coined at Rome in 269 B.C., five years before the commencement of the
Punic War, in pieces of three denominations:
1. The Denarius,
equivalent to 10 Asses.
2. The Quinarius 5
Asses.
3. The Sestertius 2 1/2 Asses.
But when the weight of the As
was reduced in 217 B.C. to one ounce, it was ordained at the same time
that
The Denarius should be
equivalent to 16 Asses
The
Quinarius 8 Asses
The Sestertius 4 Asses
and
this relation subsisted ever after between the silver coins bearing the above
names and the As.
The Denarius and the Quinarius continued to be the
ordinary silver currency down to the age of Septimius Severus and his sons, by
whom pieces composed of a base alloy were introduced, and for several reigns
entirely superseded the pure metal.
Gold Coinage.
Pliny asserts that gold was first
coined in 207 B.C., and a few pieces are still extant which correspond with his
description, but they are now generally regarded as having been struck in Magna
Graecia. The number of Gold coins,
undoubtedly Roman, belonging to the Republican period is so small that the best
numismatists are of the opinion that this metal did not form part of the
ordinary and regular currency until the age of Julius Caesar, the want having
been supplied by Greek Philippi. The
principal gold coin of the empire was the Denarius Aureus, which is generally
termed simply Aureus, but by Pliny uniformly Denarius. The Denarius Aureus always passed for 25
silver Denarii. Half Aurei were also
minted, but these are comparatively rare.
Roman Weights.
Avoirdupois
unit
name metric
grams oz. grams
1 Uncia 27.288
0 430.83
1 1/2 Sesuncia 40.932
1 203.75
2 Sextans 54.576
1 404.16
3 Quadrans/Teruncius 81.864 2
168.75
4 Triens 109.152 3 270.83
5
Quincunx
136.440 4 354.16
6 Semis
163.728 5 337.5
7 Septunx 191.016 6 320.33
8
Bes
218.304 7 104.16
9 Dodrans
245.592 8 277.5
10 Dextans
272.880 9 270.83
11 Deunx 300.168 10
260.83
12 As or
Libra 327.456 11 237.5