Original gas and oil trade magazine vintage ad for the MASTER ELECTRIC COMPANY. Main office and plant was located in Dayton, Ohio. Nothing Cuckoo about the clock!  You may not need clock drives, but time (production time) is a problem everywhere, and that calls for the most dependable, most efficient use of electric drives. This clock, with 300 lbs. of hands and four 24-foot dials is powered by a Master Gearmotor driving a precision gear train. 
​This old 1957 one page electrical equipment advertisement would display beautifully matted and framed.