Here is a Faulhaber gearmotor and gearhead. The info on label and stamped on motor and gearhead is 2842S012C 001G and has 183    429 stamped under that, MiniMotor 23/1 and 66:1. Gear head was Swiss made. About 4-1/4 inches long, shaft is just under 1/4" diameter and there is a flat. This is new. No vendor packaging or data sheets. Some minor blemishes from storage. Free shipping via USPS package / box with tracking. If you have any questions or need more info, let me know please. Thanks.