Found in a friends grandpas barn (two of these). I cannot tell if they are original. No dates,labeled reproduction, or marked "licensed" . The retainer is aluminum and has a what appears to be "fresher" coat of black paint on them. His grandpa was a tinkerer and always blasted and painted his tools, tractor parts, etc. So it is definitely possible he "refurbished" the ring. Here is what I do know: retainer ring is aluminum and has a brass flat head screw to "clasp", inside of ring looks like it may have been blue at one time, Lens is reverse painted glass, lens measures 13 1/4" across. I found them on this site as well "Crown Silver 1956 to 1973 Gill". His grandpa was a antique tractor guy and went to many tractor shows throughout the midwest. He would always bring back parts, tools, and anything rare. Any insight is very much appreciated!
Thanks

They look like originals to me.....I wouldn't have any worries with them.
Darin

Original.

Looks like mine on gill.

Crown central petroleum is one of those companies that had regional interest and when they were a "Real" service station operation hardly EVER advertised or really were that big into image . Their claim to fame were their "Twin Chimney service stations .