Cast Iron door for Coal or Wood type stove. Inside door the number 104-131 is molded into the casting. I do not know if this indicates a partial model number. The front of the door has cast: Coal Saver 102. See photos for measurements and ask any questions. I will try to assist. This item is in the category “Collectibles\Kitchen & Home\Major Appliances & Bathroom Fixtures\Stoves”. The seller is “perrys-tools-parts” and is located in this country: US. This item can be shipped worldwide.
