1942 liberty half dollar american historic society quartz pocket watch with chain

the watch is in excellent shape. there is what seems to be a little tarnish on the front of the coin. should be easy to clean but i was told to leave it in its natural state, cleaning would take away any value. i dont think the watch is in working condition but im dont really know how to set it either. haha. other than that the chain and watch are in immaculate shape.