You got a great deal on that guitar, it's in a great colour too :top:
The guitars weren't built in sequence, and yours will probably not have the 'extra' cap. From memory it arrived in the UK around summer time, along with all (7?) of Jeff's PS Sigs, and based on the dates of my guitars the wiring change happened in August/early September 2011.
Re. the tuners, your guitar has the Robson locking open-gear tuners as fitted to all trem PS Sigs. My stoptail has non-locking closed back Robsons.
I hope that helps!