They did and I suspect its very old. Reminds me of some of the tugs that Bassett Lowke produced back before the war. The stack is alum. Just want directional and speed control, which the new engine will give me. Time will tell if that boiler is up to the task. If not, I have ideas what to swap it out for. Kind of want a better uptake to the chimney for the burner heat. I have the inside of the superstructure lined with metal duct tape to help guide fumes up the funnel and protect the wood from heat. The Saito OB boiler is an enclosed pot boiler with the fumes/heat mostly coming out of the chimney opening, so I can align that with the funnel. I hope to buy or built a Saito tug kit eventually unless I find one of the metal Aster Preserverance harbor tugs.