Hardly any of the most avid Led Zeppelin collectors can boast that they have an original pressing of Led Zeppelin Past Present And Future. That's because the limited edition promotional album prepared by Swan Song records to send to radio stations and critics never went out. One of the few copies of the album to be produced as a test pressing is up for bids until SUnday (4/26). Starting bid for the vinyl pressing is $6,000. The album features an interview with Robert Plant and John Paul Jones done in August, 1979 by KLOS air personality JJ Jackson as the band was coming off consecutive weekends of concerts at Knebworth. More details about the album are available here.