52D54, 1U262-003-14, Mitchell / Edo-Aire 4000C Autopilot Directional Gyro Indicator

Edo-Aire / Mitchell Autopilot Directional Gyro Indicator as shown on photos. P/N 52D54 or 1U262-003-14. Model 4000C. Heading adjustment knob is missing but heading can be set. Also, two of the three vacuum ports in rear are cracked as shown on photo. Sold as a core, for parts or for display only, as is, no returns will be accepted.