Unique item, only one made of each. Hard to put a price on these as nothing like it has ever been sold!
These are the original films used in the manufacture of CDs 4 layers of film on a cardboard base. It is highly unlikely that any label anywhere in the world has ever has ever sold a color key, mostly because they are stored at the manufacturer and when the technology changes, they go in the trash.
In the early 2000's our CD manufacturer went out of business and returned all the color keys to us just before everything went digital, and rather than throw them away we stored them, they were just too cool. Now we have decided to pass them on to the collectors!