Vintage CCM Bicycles

Hi, I recently obtained a 1945 CCM bike, serial number 5N2991.  It has 28x1 1/2 tires, painted rims and a non CCM crank set.  The rear hub is CCM 1937 and the front is Falcon.  The metal head badge is Atlantic Made In Canada. I don't see any information on this site regarding an Atlantic CCM model.  What have I got? Pics attached.

I'm finally done restoring my almost 100 years old bicycle. It looks amazing.

So I just picked up a 68 Mustang at a yard sale thinking this might be fun to retore as I had one of these when I was a kid.

problem is that I cant remember what parts are original and this bike looks like its had modifications along the way as well as missing some parts.

What I know is good :frame ,forks,stem,handle bars,crank and rear fender

I'm building a '32 Twin-bar motorbike (T prefix) and now that I'm ready to assemble I noticed there's no hole for a rear reflector. When did the reflector become mandatory, and also when was the white visibility strip added?

Thanks!

I am trying to find out what the Apple tension should be for a 36 spoke steel wheel (V170 made in Canada 27x1 1/4). Spokes are 2.0mm steel. Tensions are sitting at 17 (park tool gauge) or 53 Kgf.  Wondering what they should be?  Would love to know front and back. Wheels are from a 1977 Targa 10 speed.