Hello QED,
I am interested in finding the same information. I have searched the forums and the net.
I've done a little bit of research - but so far nothing conclusive (can't seem to contact Pentax Japan by email - I'm not going to call them). My Aussie Pentax distributor can't shed any light either.
So far I have found this at Bojidar's site -
MZ-S
So based on this the camera was in production from 2001 to 2005.
My first MZ-S has a S/N of 4845599. Got it from Canada.
My second MZ-S has a serial number of 5106316. Got it from the US.
As for the age of my cameras I assume the second one is the newest but at this stage I have no idea what year they were produced.
Perhaps someone else on the forum can enlighten us.
Cheers.
Rod.