COIN (ROMAN)
Silver Roman Republican denarius serratus of the moneyer Tiberius Claudius Nero
Ruler: Republic
Denomination: Denarius serratus (Roman Republic)
Material: Silver
Mint: Rome
Obverse: Bust of Diana r., with bow and quiver over shoulder; Banker's mark cut into cheek
Obverse legend: S. C.
Reverse: Victory in biga (two horse chariot) riding right, holding reins, palm and wreath
Reverse legend: TI CLAVD(ligate) T[I F] in exergue.
Below chariot, control mark CXXXX[?]
Dated: -79.0 to 
Weight (g): 3.31
Diameter (mm): 18.59
Parish: LEATHERHEAD
District: Mole Valley
County: Surrey
Region: South East
Discovery method: Metal detector
Notes: Banker's Mark:
A number of Roman Republican denarii have marks cut into them.  These are often called "banker's marks" but this is a misleading term because they could have applied by a variety of people, ranging from tax collectors, money-changers and bankers to financial or even mint officials.

Control Mark:
Each control mark has only one die.  However, the entire issue was large with a total of 164 obverse dies and 182 reverse dies.