I just picked up a PP that has me stumped. It has the silver verchromt frame, but the blue slide. Frame is serial #182226p, and Rplt 3312 marked. Slide is gloss blued and clearly stamped 226 on the inside (not scratched on). The gun has lanyard loop, correct grips and correct magazine for the the pre-war model. Oh, and the frame and slide are both E/N proofed. Seems like a Danish police, but is there such a thing as a 2-tone model?