[djpateman]

I have been able to obtain a Kardex through 1969, but not for 1970 even though I have seen a few. While the cost is about double that of the COA, it does contain a bit more info, and may be more accurate than the COA. The COA is a fancy certificate that is based on the Kardex info. The Kardex itself is just an image file of the original, and is essentially a warranty document. While the COA will often give you a completion date, it is in reality the factory invoice date. I have been able to compare several Kardex (within the first 300 911) with the production book, and the invoice date is often a few weeks after completion. I have seen a factory invoice and the date on it was the same as the date on the Kardex.