So as a matter of interest, would a P2 with a less common module configuration be more valuble, or is it simply an interesting detail that a collector would appreciate?
I know some early quartz watches can be more desirable depending on which module is used. In particular, Girard Peregaux produced around 50,000 'elcron' quartz movements in the '350' family, which comprised the 351, 352, 353 and 354 models (ref: Peter Doensen book). Out of these, the 351 model seems to be rarer, and more collectable than the very common 352 version, despite the totally undiscernable difference between them (
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&uswk&Girard-Perregaux_351 - 'remarks' section)
So there you go, a long question that only needs a short answer. I've kind of rambled on bit, sorry about that