manufacturing date???

have a 1978kz1000
serial #kztooa-513646 (oo may be 00)
need to find manufacturing date for bike. emblem in front of bike is ripped on date
i know it is 77 for year but not sure of month and day.
not sure if it is on title??

Tried here? www.zedder.com/msg1.htm

I am not aware of those types of data for the 1015 bikes. Certainly, that data were collected for the Z1 and Z2 series, but I don't think anyone did it for the later bikes.