Welcome to SRP. Where I live, with the water available to me, water spots are a problem on a mirror polished blade. I've found that if I rinse the blade, wipe it thoroughly with a tissue immediately after I'm done shaving, I can avoid the spots. I do mean immediately. Even before I rinse my face. I follow with 20 laps on my leather hanging strop and then wipe with a silicone gun cloth impregnated with a rust preventative. If you get metal polish on the gold it will take the gold off IME.