Reproduction WWII German Enigma Machine Advance Bar

For sale is a reproduction of the WWII German Enigma machine advance bar, also called the compensator. This part was pressed down by the downward movement of the key stems, raising the other end that held the axle compensator.  The axle compensator served as a base for a driver thin and two or more driver thick pieces and supporting springs.  The ends of these drivers fit in the notches (teeth) of the rotor center toothed wheel, causing the wheel to rotate to the next number or letter, depending on the type of rotor.  The advance bar is made up of 6061-T6 aluminum, weighs 11 ounces, and the measurements are  approximately 10x9x0.5 inches.