Vintage Trivet cast iron with hand painted ceramic tile of the Freemason symbol

Vintage H&R Johnson ltd Trivet. Made in England. Made of cast iron with a round hand painted ceramic tile featuring the Masonic square and compass symbol. The tile has a small chip and a small scratch on it, please see pictures. I took some closeups of those so you can see for yourself. The Trivet measures 8” long and 4.5” wide. The tile is 3.5”.