This 1926 Allen's Parlor Furnace was manufactured in Nashville, Tennessee and that proof is evident on the back side. It was able to use coal in the beginning and then later wood. When the 2nd set of doors is opened, more detail is present. The pictures don't convey it properly, but on the left side it says "600-HD" and on the right side "PAT OCT 26 1926".
Undecided on price, willing to listen to offers.