Decided to sell my S 120 lens. Got it used from another person who owned it since oct 2016 I believe. It is in exceptional condition with no wear shown on the barrel.. it comes with original box, bag, booklets, foams inside, front and rear caps, hood. The hood has tiny 1cm chips.. not sure how that happened. The lens is in perfect shape. The glass is super clean as well. 
 

I checked with Leica customer care and the motor has not been replaced in this lens. However, I can confirm it works perfectly without any issues whatsoever on S2, S006 and SL2 with adapter.