I have searched mightily and have not found anything even close. This could be the centerpiece of a collection. !!
Red glass "marbles" set in a metal frame with original hanging holes. The marbles or lenses are spherical on front and flat on back. There are 269 of them !!
When held to sunlight they have a nice glow. This could be hung in a window or framed and backlit .
The metal is evenly rusted but suits the red. I would leave as is.
The sign is approx. 6 1/2" x 49 1/2".
Don't miss it ! You will probably never see another.