Here is an extremely nice Stuart D10 2-Cylinder vertical model steam engine. It is in excellent condition with no issues of any kind and is from a very old collection. The craftsmanship looks crisp as does the machining.
It turns over nicely and should be ready to run although I haven't tried it. This model has a 3/4 inch bore and stroke and stands about 6 inches tall 1 5/8 inch flywheel. This steam engine would be a fine addition to your model collection or display. I can be reached at 262 573 193 1 if you'd like to talk about it. The pictures tell the story.