Hi Keith and welcome to the forum. Really nice little stove. Looks to be a rare model of stove. I like it. Is it enameled or painted? What kind of help are you looking for?
I know nothing about coal but what I've read here. It is a redish brown porcelain that turns black toward the edges. I was looking for a little wood burner to take the chill off of a small room. Now I have to decide how to use this and if it is safe.