I’d also like to add that it works quite well! Notice thatis has both front and back couplers, the back of which I’ve seen on Bub rolling stock. I feel it may possibly be a wind-up conversion, however, there is no slot in the back of the cab or lever, also, someone would’ve replaced not only the wind-up assembly but the housing with an electric motor.
I don’t think I mentioned this above- but there are NO marking on the Loco- Not a KBN, not a Bub, Not a “Germany”- nothing