Anybody seen one of these ("Early Times")?

Anybody seen one of these? It was installed in my cabin when I moved in... it's a plate steel freestanding fireplace, marked "Early Times" on the brass plate above the doors. Just curious, really, when it was made... I'm guessing 1970's sometime. It's not terribly efficient as a heating stove, burns a lot of wood fast for the heat produced. It produces a lot more heat with the glass doors open (there are flexible screen "curtains" inside which I should probably remove as they just get in the way) but it produces a lot more smoke in the room, too. Up until this year it was the only heat source in the cabin but this year I installed an antique coal stove in the bedroom and that, at least, burns all night.

When I got it was truly scary... it was vented with B-vent pipe (!) going all the way through the roof... touching the wood of the roof, with the inner liner completely melted through. To top it off, there was a wood box lined with aluminum foil and faced on the outside with fake brick resting on the top of the stove surrounding the chimney. How the cabin didn't burn down years ago I have no idea... the previous owner said it was used "nightly". Obviously I tossed the stupid fake brick chimney cover and replaced the pipe with proper black stovepipe into stainless chimney pipe before using it.

Looks a little like the one in the deer hunting cabin I used to stay in. Like yours, it was a scary beast and I have no idea how I woke up every morning, but I did and it kept us warm. That was a long time ago and I have learned a lot since then. Sounds like you have made all the right improvements.