Atari CX-10 Joystick?

[atari52]

I, Just came across, a very close to mint,Atari CX-10 Joystick. I Know that these are the Heavy Sixer joysticks. My Question is,On the end of the plug, that goes into the Atari, Is stamped Taiwain. I have never seen a heavy sixer joystick, that was stamped Taiwain. Could someone have replaced the cord?Or could this be a factory cord? Any help would be great. Thanks.