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

I have a relatively respectable ephemera collection on the Empire brand, and haven´t after quite a bit of time spent today, been able to find this B39 mentioned anywhere.

Personally i do belive that you´re spot on, and this worm-gear eqipped model might well be a prototype...or at the very least a low productionnumber retailer only piece.

Thanks for sharing this rarity Doug, very interesting!!!