Antique Lawson Cast Iron Heater

This cast iron Patented dates start at 1910ish to 1918ish from information on the actual heater & from research. This particular heater seems unique because it is stamped IRONTON O. USA The only ones I can find identical to this one is are all stamped Pittsburgh. I have used this for some time as a “doorstop” as well as just unique conversation piece. It does have some rust due to age but doesn’t seem to have missing parts. This item weighs approximately 9 1/2 lbs. therefore Seller will pay additional shipping cost if needed. Please don’t hesitate to ask a question in regards to this.