Well Louis, if I were asked to clean them, I would use a wet Q tip, Hagerty Silver Foam cleaner and carefully clean every scale. Obviously, you want to keep water away from the leather parts of the scale. For the rosettes, a soft tooth brush, water and again HSF cleaner. We constantly get into this discussion here, "of to clean or not to clean" fittings...you own it you decide. However, any cleaning of oxidization should be done very carefully.