THE COMPUTATION OF MONEY AMONG THE GREEKS WAS BY DRACHMÆ, AS FOLLOWS:—
£s.d.q.
  1Drachma    0 0 73
 10Drachmæ    0 6 52
100Drachmæ equal to a Mina    3 4 7
 10Minæ   32 510
 60Minæ equal to a Talent  19315 0
 10Talents 193710 0
100Talents19375 0 0
AMONG THE ROMANS THE COMPUTATION WAS BY SESTERTII NUMMI, AS—
£s.d.q.
   ASestertius     0 0 01½
  10Sestertii     0 1 71¾
1000Sestertii equal to one Sestertium     8 1 52
  10Sestertia    8014 70
 100Sestertia   807 5100
1000Sestertia or decies Sestertiûm
(centies und.) or
decies centena millia nummûm		  807218 40
    Centies vel centies H. S. 80729 3 40
    Millies H. S.80729113 40
    Millies centies H. S.88802016 80
The Mina Syria Was
worth
of
Attic
drachmæ		 25
Ptolemaica 33⅓
Antiochica100
Euboica100
Babylonica116
Attica major133⅓
Tyria133⅓
Æginæa166⅔
Rhodia166⅔
The Talentum Syrium Was
worth
of
Attic
minæ		 15
Ptolemaicum 20
Antiochicum 60
Euboicum 60
Babylonicum 70
Atticum majus 80
Tyrium 80
Æginæum100
Rhodium100
Ægyptium 80

The Roman gold coin was the aureus, which generally weighed double the denarius. The value of it was,

£s.d.q.
according to the first proportion of coinage mentioned by Pliny1 4 33
Or according to the proportion of coinage at present1 0 9
According to the decuple proportion mentioned by Livy and Julius Pollux01211
According to Tacitus, as it was afterwards valued and exchanged for 25 denarii016 13

The value of coin underwent many changes during the existence of the Roman republic, and stood, as Pliny mentions it, as follows:

In the reign of Servius The as weighed of brass1 pound
A.U.C. 4902 ounces
A.U.C. 5371 ounce
A.U.C. 586½ ounce
A.U.C. 485 The denarius exchanged for10 asses
A.U.C. 53716 asses
A.U.C. 547, a scruple of gold was worth 20 sestertii; coined afterwards of the pound of gold, 20 denarii aurei; and in Nero’s reign of the pound of gold, 45 denarii aurei.

N. B. In the above tables of money, it is to be observed that the silver has been reckoned at 5s. and gold at £4 per ounce.