They are ones I could find for sale in Japan atm.
It is not specific to prime editions (sorry about the throw off, I just like them)
I do not have total production figures, but if somebody asked Nissan Japan nicely the might tell you?
Further info on Bayside which I have deduced which kept the numbers down (this may or may not be true open to correction)
No series I came in it
Early series II came in dark blue pearl (BP9)
Bayside (TV2) came in approx June 2000 onward and only was available in RS models
and deleted in the M35 (Oct 2001)
So really there were only about 17 months of them
also, According to Japanese Red book, Pearl white and Black offer the greatest resale value therefore they may prefer to purchase these...
Hope this is helpful