Two Chrysalis Records single-sided 12″ acetates of UFO’s 1978 album Obsession, each disc featuring tracks from one side of the final record. Both are identified in type on The Mastering Lab labels with relevant track listings and artist info. In overall fine condition, with a few marks to extreme edges. Accompanied by the original sleeve from The Mastering Lab. Originates from the personal collection of legendary engineer and producer Ron Nevison. RR Auction COA.