Antoninus Pius. AD 138-161. Æ Dupondius. Test strike? Medalic flan? 

  Antoninus Pius. AD 138-161. Æ Dupondius (31 mm, 19.37). Rome,
  AD 145-161. [ANTO]NINVS AVG PIVS P [P TR P], radiate
  head right / HON[ORI] AVG COS IIII, S C across field, Honos
  standing left, holding branch and cornucopiae. Struck on a very large
  flan, possible test strike or medalic flan. RIC 802; Cohen 415. 


Sold for $149, before August, 2005.

From ImperialCoins, www.imperialcoins.com.