Here is a little timeline for a special ordered Camaro that ended up with a 12B on the trim tag. VIN 5583XX No X code.
I believe the car was ordered somewhere around Friday November 08, 1968 because that is the Date on the lien. Also, I'm pretty sure the purchaser just got home from the Navy on the 6th.
The date on the MSO (Manufacturer Certificate of Origin) is Thursday December 12, 1968. This the date that ownership of the car was transferred from Norwood(GM) to the dealer. I have to assume that this date is very close to, if not the same as, the shipping date that would appear on the NCRS document....waiting to hear from other members since this car's info is currently not available.
I believe this is an early 12B car because I have seen a 12A tag on a VIN 558080. That's around 250 cars.
It may be safe to say my car began production early Monday December 09, 1968, spent the next four days on the line, rolled out the back door Thursday afternoon.
The Application for Title is dated Wednesday December 18, 1968. I believe this the day the owner took delivery.
The original title is dated Friday December 20, 1968.