I just bought a home and it has this exact model in it! I've seen many different 100 series pictures that have different edging and knobs, etc. but yours is exactly like mine! How do you like yours? Been burning with it long? Any pro-tips? I'm still getting acquainted with mine, but love the auto damper feature--incredible they had this kind of technology in the 70's. Just last night I swept the chimney and correctly installed the flue pipes for it (previous owner had them backwards) and it seems like it's burning even better now, especially the draft.