Help with an unknown windshield

I have been cleaning the attic of the garbage out and found an old windshield in the back corner. I think it is from a late 50's Chevy, only because one of my uncles had a 57 for a while.

It is 60 1/4" long with it sitting on the floor.
measuring up the center of it, it is 17 1/4 tall.

I could only find one mark in the bottom center.






I know it is pre 62, it still has a parking sticker in one corner.

The gl*** is not perfect but is usable, I don't want to trow away a good windshield.

 

I think there should be a number somewhere in the lower corners like a part number that they use to identify them. I'm sure a gl*** guy here on the Hamb can chime in and correct me if I'm wrong. Post the number and someone here will tell you what it fits.

 

AS-2 means it a tempered back gl***

 

Thank you, but it is AS-1, my camera didn't want to focus that close to it. There is also the number 78 there as well.