Identification help please

[Vincent W]

I purchased what I thought was a Aurelian Antoninianus, Cyzicus mint, RESTITVTOR ORBIS Roman coin. Everything adds up except for the 'P' that is placed between the two figures. I can't find any other example of this coin with the 'P', but it's clearly Aurelian as it says on the Obverse. Any help would be great - thanks

[Pekka K]

Here it is: http://numismatics.org/collection/1944.100.32940

[Vincent W]

Thanks Pekka K