This Telechron rotor, model BC3, is a rare new old stock item ideal for vintage electric clock restoration or repair. ? Model: BC3, marked with the additional number 478. ? Specifications: Operates at 60 RPM, code M3584, 50C. ? Design: Features precise synchronous motor technology for reliable timekeeping. ? Compatibility: Commonly used in vintage clocks, chart recorders, and other timing devices requiring Telechron rotors. ? Production History: Telechron produced this model during the mid-20th century, with manufacturing continuing until the late 20th century when operations ceased. Telechron rotors, including this BC3 model, are no longer in production, making them a valuable find for restorers and collectors. Once our stock is sold out, these rotors cannot be restocked. Don?t miss this opportunity to complete your restoration project with an authentic BC3 rotor!