Figured it would be interesting to share these pictures of the same cut/style Guess jacket that I had found on depop. Unfortunately the seller doesn't remember the tag number, but its worth a look anyhow. All the accurate details, sans the colors can be found and analyzed here.
I'm 90% certain Marty's jacket was actually a woman's jacket due to the red guess label (same with his pants), you see the green guess label is reserved for men. Really wish I could find the cut number though, not that it would have been readily available.