Check the listing for details. Antique 1913 Sonora Phonograph Motor Speed Control Dial With Hardware. Condition: Used. Listed at 24.99 USD. This antique 1913 Sonora Phonograph Motor Speed Control Dial With Hardware is a rare find for collectors of vintage music equipment. The dial is designed to control the speed of the phonograph motor, ensuring that you can listen to your favorite records with the perfect sound quality. The hardware includes all the necessary screws and bolts to install the dial on your Sonora phonograph. This item is perfect for those who are looking to restore their antique phonograph to its original state or for collectors who want to add this unique piece to their collection. It is a must-have for any Sonora Phonograph enthusiast and is sure to be a conversation starter.