Very Rare Original Condition 1910 S4 Century Sidegear Oscillator. We Are Very Pleased to be Able to Offer Such a Great Example of Early Gear Driven Oscillator Technology. This Fan is Highly Collectible Because of 2 Key Components. The Motor Features an RPM Driven Centrifugal Start Switch, This Can be Heard Engaging and Disengaging in Startup and Shutdown. The Motor was Recently Rewound by Rick Huckabee. The Oscillating Mechanism has to be One of the Most Over Engineered Gear Driven Oscillators Ever Produced. The Number if Gears Used to Make This Fan Move Left to Right is Astounding. All Gears in This Drivetrain are Original to This Fan Which is a Rare Find. The 5 Speed Switch is Equipped With a Freshly Wound Coil. The Headwire and Power Cord Have Been Upgraded for Safety. We Have Noticed a Very Small Stress Crack in the Rear Motor Housing as Shown. This in No Way Effects Operation of the Fan and Appears Very Tight. These Fans Very Rarely Come Up for Sale, So Don't Let This Opportunity Pass.