While there is not a really good way to tell the two releases apart on the outside, there are some clues and a sure way once you open the set up.
If you can look at the discs themselves, on the "read" side, near the hub, there are some machine-inscribed numbers. If the numbers end in "R0", then you've got the original release with all Heyes music.
If those numbers end in "R1", then you've got the replacement discs.
But, as I said, there's no way to identify them before you open the package up. CBS/P used the exact same printed insert for both releases.
Here's another, chancier way to perhaps identify which set you'll get, based on the kind of keep cases that CBS/P was using. It helps if you have other releases, like Season One sets to compare to.
Stack S1V1, S1V2, and the unknown, unopened S2V1. Then look at the bottom edges of the three. If they all have the same solid silverish color, then it can be assumed that the keep cases are all the same and theres a good chance that it's the older, Heyes release.
If however, the bottom edge has a darker notch in the lower portion of the edge, centered toward the left, then you have the newer packaging-style of keep case that CBS/P used to send out their replacement sets. This is no guarantee of what's on the disc. For all I know, they could have started using the newer style of "page" inserts and continued putting in the old discs. I'm just going on what I've got, hoping it could be a valid clue. But at least you can make a semi-educated guess based on this anecdotal evidence.
The Season Three releases also have the leftward dark notch if you look at the bottom edge.
Hope that's of some help.
Harry
