there weren\'t that many copies of III that had the rotating insert, all the re-issues after the original relese were just a plain printed sleeve
one of my fave zep albumns along with houses of the holy and the best thing they ever did Physical Grafitti, which also had a strange die cut insert
its one of the great shames about the demise of vinyl, sleeve artwork is rubbish these days. Physical grafitti and III must of cost a fortune to manufacture