I have several signs at this point, but some of the porcelain has dulled a bit. Its still in great shape. I didnt want to put anything on them until i found out what people use to clean or shine the porcelain. Any insight?
It's been said that "Howard's Feed & Wax" (a polish for wood) will hide the dulled finish and give it a temporary nice shine. If sign is outside, F&W will not last as long, but if displayed inside away from weather and sun....it should last a decent length of time.