Handy way to find out if brass is solid or plated is to try and stick a fridge magnet to it. Solid brass isn't magnetic. If it is solid it is worth having it lacquered after all your hard work. It will protect it from the air (which oxidises it and then tarnishes it).

But are you sure it isn't lacquered already? An hours rubbing is a long time rubbing. I wouldn't want to lessen your spiritual journey but you may be taking the slow train.