I was always intrigued by albums that had multiple variations of their cover artwork. To be clear, I am not talking about albums that received new artwork on a reissue (like several of the recent Rush reissues) or albums that had different covers depending on the country that they were released in (like Hendrix's Electric Ladyland.) Rather this is for albums that multiple variations of the cover available at the time of initial release. The most notorious one that comes to mind is The Police's Synchronicity. It was reported to have had more than thirty variations of the front cover. Here are a few:
How many can you think of?
How many can you think of?