What I did was, take a brass brush and whitening toothpaste. scrubbed it down real good. Then I took a polishing rag and buffed the head to a mirror shine again. It looks like almost brand new. I am truly amazed how it cleaned up.
3 packages arrived on the same day, so excited. One might get sent for replanting and the super speed is being PIFd to a friend interested in getting into wet shaving.