How many pieces are produced since 1998? It must also enter the list of limited edition after end of production????

Christies Auction in Swiss on the 14th of November 2005 has just auction PP5085 at record breaking price of Swiss Franc 38400. The lot number is 36. It is interesting that this particular model didn't get much credit and attention as much as PP3710 during the production from 1998 till 2004.

I think that PP 5059 is better looking and more complicated than PP 5070. How come it is not as popular as 5070?