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This Jacobson was also built in Titusville, PA, sometime in the mid to late 20s after the plant in Warren, PA burned. When I found it, it had been a parts engine when it still had some parts. It was a base, two flywheels, and a crankshaft when I got it. Those parts were assembled but had been left out in the weather for years. I located a used cylinder and a few other pieces, and fabricated several parts from steel with the head being the largest project. The head was assembled from inside out. This engine and another Jacobson built engine, being the 4 HP Bulls Eye, came at the same time in December of 1999.