I apologize for the lateness of this post, but it was impossible to get information out of Kurt Adler. If you do a Wizard of Oz Stocking search on eBay you can see a photo. The front has Glinda against a lavender background with silver stars and it says 'Are you a good witch' while the Wicked Witch is on the reverse against a darker purple background with silhouettes of her flying on her broomstick and winged monkeys and the famous quote finishes 'or a bad witch?' I'm told it's really beautiful in person. Right now it is exclusive to F.Y.E. stores, but there is a chance it could be in Adler's main line next year. Check the F.Y.E. website for store locations:
The stocking retails for $14.99
Thanks to the Oz-some Jennifer Kolanowski for tracking this down!