Almost every original cats eye sign I have seen has a cover behind the marbles. Unless two of these signs were bolted back to back. Sign looks original to me.
Last edited by 57tbirdkid; Tue Mar 20 201205:52 PM.
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Sign looks all original to me but I also believe it had a back on it. Looks like it was removed years ago. You can see a diamond line a few inches in around the outer edge where it could have been. Also looks like a few of the glass marbles were replaced.