Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums Want to Buy Petroliana Cats Eye marble

My old Cities Service sign with the cats eye marbles in it is missing one marble and I'd dearly love to find a replacement!
Tough part is that it is "RED" in color!
I've attached a picture to show what it looks like.
The metal case has "libbey" imprinted on the back, so I suppose it must be the brand name?
I just think there is one floating around out there somewhere?