Here is a picture of a gilt 1966 original dial that still glows.
https://www.rolexforums.com/showthread.php?t=253819
If something is not quite right, it's possible. You can inform the official Omega service in Finland directly. I would have thought they have the expertise to determine whether the dial is original or not. Here's the contact information. They'd probably appreciate it.
https://watchservice.fi/en_GB/Click to expand...