This box is large and heavy and resonates the music beautifully. The AD30 mechanism has been completely taken apart and rid of all the old grease. It was cleaned thoroughly and new grease was applied to the gears and spring. Clock oil was added to all pivot points and it runs very smooth and quiet. It has the early brass pinion gear, not the modern nylon one that is notorious for cracking. Comes with 5 discs. See photos for details. Shipping is $14.