So I just stumbled upon my father's old items, and I found this old Ray Ban Aviator. I have a problem though. I don't know if these are actually authentic or not. My father died in 2003. I tried to ask my mom about this, she first saw these glasses on their first date (early 1980s), but she has no idea if these are authentic or not. I attached the photos, but here are the things that I found.
On the top of the frame, "B&L RAY-BAN U.S.A." was engraved.
at the bottom of the same frame, "B&L RAY-BAN 5814" was engraved.