These Ray Bans have some indicators but are there enough of them?

I have these glasses. They are marked Ray Bans USA and B & L 1/10 12K GF.
West Germany is printed on one of the temples.
They have nothing inscribed on their lenses.
There are no model numbers or IDs noted on the temples.
They appear to have the correct hinges.
The lenses are sunglasses and do not appear to be prescription lenses.
My challenge is determining if these things are real or fake.
I think they are early glasses but I am just not sure of it.
Any insight is truly appreciated.