The 10-20 was built from 1923 till 1939. There were more than 216,000 10-20 tractors built. They had a 4 cylinder engine that produced 10 hp on the drawbar and 20 hp on the belt. The serial number on our tractor is #178536 and was built in 1930. Our 10-20 came from St. Leon and was in a package deal. It has never fit in our collection and now we are planning to sell it.