I believe this is the oldest version of the SE3, being badged Hobbies (vs Mamod) and no lubricator or whistle. The burners on these are not as big around as the later Pre-war SE3's and are taller and the base is rectangular vs square. Maybe someday I'll get this one cleaned up and give it a run, but until then, here it is "as-arrived" and very dusty...

A very cool engine.
And a nice box and original instructions is the icing on the cake.
Thanks for posting the picture, but a video would be even better. 🤠