I've got an old 1978 Fender F-65 acoustic and was wondering if this might actually have a nitro finish?

The reason I suspect nitro is that is the guitar is showing significant wear patterns on the top face of the body. I guess its still possible that the dye underneath the finish is fading despite a poly finish?

For a cheap laminated acoustic this still holds its own against many other expensive guitars and was one of the best bang for the buck deals I've come across.