260-269 AD. Rome mint (?) Obv: IMP POSTVMVS P F AVG legend with radiate and draped bt right. Rev: blank. 3.03 grams. Property of a Cambridgeshire gentleman. This error in striking occurred as a result of two blanks being stuck together when inserted between the dies; one side of the top of the pair received an obverse impression while one side of the lower of the pair received a reverse; the other sides of each, being protected, stayed blank. An unual error. [No Reserve]