Vintage Way-A-Head Auto Headlight Lenses

I'm selling a set of THREE vintage auto headlight lens that are marked in the center, "Way-A-Head", "Pittsburg PA", "Pat'd" and marked on the edge is: "Top 8 1/2". The diameter is 8 1/2" and the center of the lens is raised 1 1/2". Attached on the back of the lens are three pieces of frosted glass (I'm guessing) to direct the light downward. (?) You'll find a couple of very tiny dins on the edges of the lens. Note the last picture above, one lens does have a crack. You can see it, but, you can't feel the crack. Otherwise, these pieces are in great condition for their age.