Ohio Stove CO.  Cast Iron door for Coal or Wood type stove. 

I am not 100% sure model this door will fit. Selling as found , which is new old stock from a vary old hardware store. 

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.