Two Columbia Records double-sided 12″ acetates of Mason’s 1976 double-LP album Certified Live, each disc featuring two different sides of the final release. Both are identified in type on The Mastering Lab labels with relevant track listings and artist info. In overall fine condition. Both accompanied by their original sleeves from The Mastering Lab. Originates from the personal collection of legendary engineer and producer Ron Nevison. RR Auction COA.
