https://www.ebay.com/itm/Vintage-19...Gas-Station-AdvertisingSign/401493891748

Does anyone know anything about this same type sign that does NOT have the white ring around the edge?
Trying
to find out more about it but can't locate any info. on it.
Same year, size, etc . and IS definitely an authentic 1954 . If anyone is wondering.... no , it hasn't t been painted green over where a white rim may have been, it was made without it.
Also, what are these type signs most commonly called...bubbles, fisheyes, buttons or what ?
Thanks and happy Easter to all !