You've been given some good tips here. And you're right, metal polishes will remove gold wash. An easy thing to do is simply place some tape ( masking , the blue stuff etc) over the gold as some insurance. Then go ahead with the polish and work out the spots.

Remember to not leave your razor in the bathroom because of the moisture. And in place of oiling I've be very happy using Ren-wax to protect my razors. No mess , neat and clean.