Pretty interesting... I also have the Advance Shipping Notice (same as window sticker info) this order number is after mine, and my ship date on my copy is 5-22. (car was not shipped until 6-17-69 per carrier notice I have) So it is possible to be the date. However the number next to it I believe is the shipping route. Mine is A50 and gives a description after it. As for the other set of numbers I feel are dealer related. I have a set of numbers on my notice labeled REG. (region?) 41 and then Sold to Dealer No. 63928 This number is tied to the order form, where the car was ordered by the dealer on 3-12-69. Hope this helps.