The SPD for my '70 Dart is 802, but the door sticker says 9-1969. So no, the month of the door sticker does not necessarily match the month of the SPD.
In general I would say that the date on the door sticker would not be earlier than the latest date code found on the car.
can you share more info about your Dart, in this thread or start another
with an 802-SPD the car is probably a PROMO "dealer introductory show unit" * NO cars were assembled on SUNDAY August 2, 1969
I've always wondered what happened to the PROMO A-bodies, this would be the first one I've heard of - lots of known B & E-bodies
