About 25 years ago a local sporting goods store was closing out their shooting glasses. They had Bushnell shooting glasses for $3 a pair so I bought the last 4 pair they had. I believe Bushnell and Rayban were owned by Bausch and Lomb at the time. All are pretty much the same.

I’m not sure you can put an accurate date on these since the same design has been around since the 40’s. Also other companies have made the same design. My dad had a pair of Wilson from the 50’s.