Tested and works excellent, needs some gears for the gear box.

The Gilbert Erector Set Motor and Gearbox from the 1940s is a vintage toy part manufactured in the United States by A.C. Gilbert Erector. This classic piece is designed for the Gilbert Erector Set and is a valuable collector's item for enthusiasts of vintage and antique toys. The product may require replacement gears to function properly, adding to its charm and authenticity as a piece of nostalgia from the mid-20th century.