Hey Chandler, please see some clothing [various companies] from the '70s and '80s and you can see very often Talon with a "bullet" zipper pull [with like on this AF jacket and without a horizontal _ on the bottom of the slider]. You don't need to be a zipper wizard to spot these zippers on various garments, having a lot of practice should be really helpful regarding this activity.
How can you I.D. plastic from the picture? Serious question -- not being that smartass.
I asked the person who owned the AF jacket with a label like this one about the zipper. The easiest and fastest way. I honestly doubt that all these garments have old stocks of Talon zippers from the 50s or 60s. I'll still incline that it is a jacket from the '70s. You can see what the AF label from the '60s looks like, [what is characteristic, you can see city's names, and this label design was modified later, like on this AF jacket from EBay].
Regards