Took a look at the pictures I have and could not find an example from that month - that factory that I could post as a good example IMHO
Here are a few examples from just after that period and a bit later (partical VINs included for comparison) Also included with the wire retainers in the general area to help others with similar questions now and in the future
5R09C1508xx
Does not show that retainer just out of the picture above. It may hold wires and cable but can't be sure
Late Oct 64 car. Original picture from 64-65. Cable in the upper clip/retainer (purple arrow) but not in lower
5R07C161xxx In upper not in lower
5R09C1800xx
Sorry no smoking gun from my stuff
Your question motivated me to post two other related threads related to the same start cable