Here's an original genuine Canon AE-1 Program Focusing Screen. It is the standard screen with the AE-1 Program cameras. I don't know what type of screen it is, please do not ask.

It is used but in great shape, very clean and bright, with no wear and no scratches. it will perform as new. 

The part is easy to install, it only takes you 1 minute or less.

Genunine Canon parts.

Pls make sure your camera is Canon AE-1 Program, not the Canon AE-1, A-1, AV-1 or AT-1, as they have different focusing screens.