Owned two early fastbacks over the years. Once was so early it was built with the cloth interior and the other was ordered as the first special order "710001" for southern Calif. Always believe the dealer did it that way to get one of the first since a paid for special order would have typically been moved, in build order, before many other types of orders.
Rarely do any owners out here kept any paper work with their cars so it's rare to find original paperwork on out cars