Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Awesome, you have started! 

I want to say this is more of a early model since it has the "round" sight glass fittings and the glass tube slips into the round fittings.  Just like a Empire B30 or B31.  So I am thinking early 1930s.  I love The "round" sight glass fittings.  Not only by the looks of them but they are also easier to seal with O-Rings.

I can't wait to see how this turns out and I hope you enjoy the engine!