This Sigmatek 3-1/8" Attitude Gyro 5000EG 14V.  Made by Sigmatek and comes without a warranty. Unit was overhauled in 2020, but never reinstalled in aircraft. Works perfectly, like new condition. The manufacturer part number is 1U670-002-2. FAA certified. Can be used to replace the aircraft's turn and bank. Comes with FAA Form 8130-3.