Nos 67-9 Barracuda Notchback & Fastback Rear window trim

Ok, I got ya, the 1st 5 pics #2783538 is the 67 Mylar lockstrip for the rear windshield. Any yellowing/hazing? I would be concerned about brittleness etc for 50 yr old "plastic"

No concern as it is as fresh/pliable as it was when new with nice chrome that hasn't seen daylight in decades.. Plus how do you know when it was made could have been made in the 80's or later who knows they did not just stop making parts after the model year was done....