Recommendations for the owner of vintage watches:

All antique watches are mechanical. Many repairs will not be cheap, as most likely they will require replacement of non-standard parts, unlike most late model watches. 

Antique watches should not be dropped, because repairs may be expensive. Antique watches are generally not waterproof. Waterproofing was not in production until the middle of the 20th century. Therefore, you should protect your antique watch from exposure to moisture. 

If your watch becomes wet, it should be dried off quickly. Carefully open all covers and use a hair dryer to blow dry the movement, dial covers, and crown. This will reduce the amount of rust. Bring it to a reputable watch repair person as soon as possible. This watch is in excellent condition. It is running beautifully.