The cable guides do match better with the p-10 above...though I don't see the eyelets on the rear of the alleged p-13 9. I'm sure you're right, I just don't see it. The ST slant also seems a better match for the P-10. I'm also not seeing suicide levers and the brake levers look like campy to me in the photo. Hard to say with photo quality, but they don't look like the p-15/p-10s in the catalogue. Correct me if I'm wrong, but there could be variance here because many of these were custom made to rider preferences.

I'd have assumed he was right because he had the manual.