Tommy, itīs an Empire 90, or the "Power Boy" as it was called in the ads.
Very nice little engine, congratulations !
(Know it most likely is a typo, but in the interest of perfection, your new windmill (if Empire) would be named B36, and not B56)
The model name for the windmill, B56, I found on another members site who has the exact same one. I better include a picture of that also.
Here's the windmill.
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