Vintage GUERRIER 1920's walz-gold double 10 Jahre Garantie art deco lady's watch

From what I researched on this watch, they are swiss and the writing on back is Germany and it stand for 10kt gold plate, and this Has name on back of Case with a Knight holding a Sword and it say's ''GUERRIER'' and supposed to be a  very good Swiss mechanism and were made around the 1920's, possible early 30's

The name on the band as Shown say's AMERIKANER DONE' , and I barely remember but something about Germany waving flags telling the Americans to Go home and that's where they derived Amerikaner done'

From looking at this under a magnifier glass this is Gold Plated and not Solid gold, There is a Symbol of an Ships Anchor and a R & W on opposite sides

It was running but running way to fast, I decided to clean it in Naptha as recommended, and clumsy me Dropped the mechanism after cleaning it, now it does not run, I believe I damaged the Balance Wheel as it move erratic , So it must be repaired

I would not even know how to order that part or I would change it myself, if I did not drop it again ''lol'' im trying to learn but very limited to what im able to do

Im a U.S.AIR FORCE VET. and now im totally disabled from a Heart attack and Stroke, I still Strive for Excellence, Honesty and Integrity, I have done my best to describe this item, but '''PLEASE'' if there are any issue's  please let me handle it, no need to involve,, Thankyou for looking at my sales'