8-track stereo tape cartridge of Michael Jackson's 'Thriller' in an AMG graded slab.

8-Track Grading

Professional grading and authentication services for your 8-track cartridges. Our expert team evaluates every aspect of your 8-track to provide accurate grading and preservation.

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8-track tape cartridge of Bruce Springsteen's 'Born to Run' in an AMG graded slab.

Industry-Leading Slabs

AMG offers a patent-pending, sonic-welded case that is tamper-resistant and is manufactured from museum-grade acrylic that protects from 99% of harmful UV light.

Graded AMG label for the Black Sabbath "Black Sabbath" album

Inspiring Iconic Label

Every collector has a goal of maximizing the value of a piece -- and this is what an AMG label does. The label created for each piece is an honest and objective representation of the item's condition -- and collectors are seeing a 6X+ premium for pieces graded with AMG compared to raw sales.