I love the old iron. Love to see the steam tractors tugging on anything. One of the engine's I'd love to see in person is a hot bulb engine (other than in the Lanz Bulldog). I've only found one, and it is a rusting ornament in Tofino. Apparently came out of an old fishing boat. I know they were sold as stationaries, boat engines and tractor engines. I've even thought about trying to build a model, but apparently they don't scale well.
https://www.youtube.com/watch?v=U_GMg9FXWRI