Nice work and good documentation. I did basically the very same thing as you did. Those panels are a great way to save your original fenders.I used the cover plate and the one under it to repair my fenders that you mentioned. They both fit perfect and I do believe the second post picture was NOS. One of the panels lacked fender flare holes but that was wasn't hard to add in.
See post 62 in my rebuild thread Josh's 1985 CJ7 Restoration.
hope this helps!