Augustus (27 B.C. - 14 A.D.) - Silver Denarius - 18.09mm, 3.74g
Obverse - AVGVSTVS DIVI F Augustus, his bare head right	Reverse - No legend. IMP.XII in exergue. Bull butting left
The image below was photographed by Paul-Francis Jacquier - Numismatique antique. The image above is my own scan of the coin, using an A4 flatbed scanner.
Minted in Lugdunum (Lyon, France) 11-9 B.C. Reference: Sutherland, C.H.V., "Roman Imperial Coinage", Volume 1, revised edition (RIC), p53, nr.178a. Mattingly, H., "Coins of the Roman Empire in the British Museum", Volume 1 (BMCRE), p82, nr. 476 (↓ die axis) Seaby, H.A., "Roman Silver Coins" (RSC), Volume 1, p141, nr.158. Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 1, p86, nr.158. Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC II),  p9, nr. 285 (B03, O012, R185, T038, M08, Exe: IMP.XII) Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC II-eBook),  p8, nr. 285 (B03, O012, R185, T038, M08, Exe: IMP.XII) Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p68, nr. 63. Kampmann, U., "Die Münzen der römischen Kaiserzeit", 2e Auflage (Kampmann), p41, nr. 2.58. Quality: Very Fine- Rarity: R2 (Rare, between 11-15 specimens in major collections according to RIC, but should probably be Scarce)