I own a KE date code P9S Sport Group II/III model (1994) and I have seen photos of other KE date code models but all have been SG models. I have also heard of KF models. I have not heard of any P9S after that time. My guess is that these late model P9S were special order build made from existing stores of parts. W prefixed serial sounds really strange as all the K date models I've seen have normal serial numbers (1XX XXX and 4XX XXX). Is the rest of the number normal?