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2 Airplane Sperry Gyroscope Automatic Pilot Servos
2 Sperry Gyroscope Servos. All the caps are in place and the cap screws are all wired from factory. These may be new I'm not sure. One is marked, Servo Unit Mark 4 Automatic Pilot BU OF AERO-U.S. Navy Ser #4544 and on the other side the tag states War Products Division Eversharp Inc. Under License of Sperry Gyroscope. The other units tag states, Part # 644231 The Electric Auto-Lite Co. And on the other side the tag says Servo unit for Mark 4 Automatic Pilot FSSC 88-S-250 Cont. 99330. I believe they are from the 1950's.