I'm going to try and pick up unaltered Blizzard of Oz and Diary Of A Madman off ebay. I know the cover to get(small image of original cover inset in center of cd cover). In case the seller is using wrong ebay picture, or discs and cover have been switched, what is an identifying catalog # or something on the disc itself of the right ones?

They should be listed on Amazon.com in the description box

Blizzard: EK 67235
Diary: EK 67236

The discs themselves have the same artwork as the background of the CD cover, kind of a smoky/wavy blue (Blizzard) or green (Diary) thing.

Thanks! What I needed to know.