This came from the crg website and it should answer any questions about lof and ppg codes
First-Generation Camaro Research and Restoration Data
www.camaros.org
The first photo is of the windshield that was in the convertible the second is of the windshield from auto city glass that they etched for me
LC is March of 63 and 10 is the plant code for Lathrop Calif,my car is a late March of 63 built at the Van Nuys factory.
I would think you would want to go with a lof logo.
If you give auto city your build date they can figure it out for you.Have you had any luck with them getting more in that they can etch?