Not a repost on here, but it was on Classiczcars.com a couple of years ago. Not sure if anyone confirmed it was the real deal or not though. At least the VIN seems legit.
I have just read all the way through the Classiczcars topic about S30-00002 and my brain now hurts.
I think the most likely explanation of this car is given in kats' post (number #123) here;
http://www.classiczc...s30-0002/page-7 where he says;
"One thing I have heard recently from a man who worked for Nissan, it was common in Nissan Shatai (manufacture) stamping duplicate chasiss number for test assembling.
Like 00002 or some super early number would have been used again, they thought no-problem because those numbered car never be able to get out the factory anyway,they (real 00002 and duplicate 00002) are test cars.
This is just my thought,I think this car is not 1969/ S30-00002.
I think in 1971 they made this car and stamp S30-00002 on the firewall."
To further support this theory, compare the positions and alignment of the chassis numbers on PS30-00009 and S30-00003 ("Taken from the very first Factory Workshop manual for the Japanese market cars, and published in 1969" - Alan T. in post #74, page 4) to the number on S30-00002.