This is a Futaba FP-S38 Indirect Drive Servo.

This uses the vintage "G" type connector where the pins are exposed on the end of the servo wire. It will NOT plug into "J" connector modern equipment.

Dimensions:0.77 x 1.59 x 1.5”

Torque:  38.00 oz0in

Speed: 0.22s/60

Works great!

Connector: Futaba G 3-pin