Samson Tractor was a General Motors brand from 1917 to 1923. So, for a few years starting just before the end of WW1. We've got an internal combustion engine instead of steam and everything is made of cast iron including the wheels. The layout looks almost modern. No reason to change it if it works. The auxiliary shaft that runs alongside the engine is different. Looks like it drives the water pump and maybe something else as well. The PTO drum on the back looks like a pants grabber. Via Posthip Scott.
3 hours ago