The window sticker for my one owner 1969 model car with SPD 11/8/68 shows the SPD B08 preceding the "S.O. Number" (sales order number?) at the top. The un-labeled 'date', if that's what it is, at the bottom is 1031 (10/31/68?).

My wheels are date coded 11/12/68, the newest date code I could find on the car, which indicates it actually came off the line after 11/12/68. So the 'date' at the bottom of my window sticker is not closely related to the SPD nor the actual date it came off the line.