My copy is a semi-transparent slipcover over a digipak so it will look different depending on how you turn the slipcover. There is no clear "front" or "back".

Example of reversed covers:





And it might have been re-released as well with a different cover. I know there was a box set that looked like the inside of the TARDIS when it unfolded, but I don't remember if it was season 1 or 2.