I am quite satisfied with this little engine!
Darn!!! ;c)
Yep, she's a beauty, and a really fine runner.
I believe Aster also built a 45mm gauge Shay locomotive, and the cylinder layout of your engine would be just about the same, though the base might be a bit different, or not. Clearly, yours is designed as a ships engine, but it may have a close locomotive relative?!?!
Here it is:
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