The windshield has been in the car well before I owned it and I'm pretty sure its not original per the JG. It does sport the AS1 and Libby-Owens-Ford designation though. I don't think its Pilkington glass either. Perhaps a "back-in-the-day" GM service replacement ?
All the other glass in the car is original to the coupe.
All the other glass in the car is original to the coupe.