From the eBay description:
Even non-collectors find this an enchanting piece. The Zilotone, made by the Wolverine Supply & Manufacturing Co of Pennsylvania, circa 1930, features a little man playing a xylophone. A metal song disc is inserted in the toy, and the clockwork is wound up. When switched on, the musician moves back and forth, hitting the keys with a mallet. Comes with 3 different discs: Yankee Doodle, My Old Kentucky Home, and The Farmer in the Dell. Measures approximately 10" x 8 "x 7", sturdy pressed-steel construction.
Here's the eBay listing for Wolverine Zilotone musical automaton wind-up toy