Hi
Do anybody know when the Ray-Ban company started to print their Logo on the front of the lenses.

When I was young in the 80's Ray-Ban glasses were very popular but I can not remember any logo on the lenses like today.

I also got two pairs of old ray-bans which I am pretty sure are genuine. They dont have the "Ray-Ban" written on the front but they have B&L etched into the glass. They are also stamped with Ray-Ban U.S.A.+ numbers on the bridge and arms

Do anybody know when they started printing this little logo on the lens?

Thanks
Kts