Yes, that's the zipper, Ailee. This is really interesting, and thankfully in case it turns out to be a fugazi, I didn't pay much for it.It looks like a fake Aero (replaced label) to me. No top stitch on the sleeve / body attachment. Aero label looks weird. The main zip is an Ailee, a zipper you'll find on French jackets from the 80s or 90s.
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Maybe @Hide'n'seek can tell
I'll have more pics of the sleeve repair area and the label tomorrow.