The P12 was the standard road Paramount when the second-gens first came out in 1959. Nervex lugs, Stronglight crankset, Campag GS mechs, and NO chrome on the framesets of base models. Chrome lugs and fork ends or a full chrome finish were available as extra-cost options, along with a Campagnolo seatpost in place of the stock aluminum tube type, a Record crankset, and white plastic fenders - presumably Bluemels of unknown model.

The P13 came out in 1964 as the "Deluxe Paramount Road Racer." It essentially took the place of the fully-optioned P12 - chrome lugs, ends + all Campag Record & Gran Sport. It's pretty much impossible to tell whether a fully-optioned P12 is a P12 or a P13, unless one of the options is missing (e.g.: A frameset with full Campy and no chrome = P12 w/all options minus chrome). The P12 remained as the base model w/no chrome and Stronglight fittings.

Additionally, the P11 was the tourist version with North Road bars; almost forgot to mention it.

-Kurt