COIN (ROMAN)
A silver Republican denarius, the coin is mis-struck. 
It is just possibly a coin struck by Mark Antony at a moving mint, 41 BC
RRC c.f. 516/3
Ruler: Republic
Moneyer: Antonius, M.
Denomination: Denarius (Roman Republic)
Material: Silver
Mint: Moving with Republican issuer
Obverse: Possibly head of Mark Antony right
Obverse legend: ....
Reverse: ?Fortuna standing left, holding cornucopiae [and rudder]
Reverse legend: ?[PIETAS COS]
Dated: -60.0 to -31.0
Weight (g): 3.27
Diameter (mm): 18.92
Thickness (mm): 1.66
Preservation: Fair
Parish: Restricted Access
District: Adur
County: West Sussex
Region: South East
Place known as: Lancing
Discovery method: Metal detector
RRC reference: rrc-516.3
Notes: This is a very tentative identification, but the coin is certainly a late Republican coin, c. 60-31 BC.