I have a retired Brown Hearthstone II.
It now sits in my foyer holding a plant and Tiffany table lamp to greet folks into our home.
It also makes one heck of a morning boot tying stand since it's just about the right height and definitely won't slide
%-P
It heated our home for almost 25 years on coal as we had the conversion kit. Even to today's new stoves, that ol' hearthstone on coal was fantastic. When I think back as to how little a ton I paid for the fuel and how long it lasted, I'm still thankful we had it.
That stove paid for itself many, many years ago.
As for your parts, the brown soapstone is long gone, as are the brown enamel trim accents.
We broke the ash pan door latch off in about 1989 and it was discontinued then.
I'm pretty sure you can still get the inner castings for the woodburner. I was told the coal grates and baffles were discontinued many years ago. That is a shame. It was fantastic.
As my signature state's (which I borrowed some of it from MSG) I still do miss the Hearthstone II, although we still have it and it fits nicely in the foyer as a fine piece of furniture would.
I would recommend a complete dismantle and rebuild on yours. After a while, the stove cement degrades and the soapstone tiles become loose and create draft problems. Not too much hassle, but I wouldn't recommend doing it in the living room either.