Diesel Super 3-cylinder. These are very rare, especially here in the states, as they were not priced competitively against other tractors of the day. This is an interesting piece of Porsche history, and apparently has been made to run again after sitting for several years. It's in rough condition, and is missing a lot of trim pieces, but you probably won't find another one like this anywhere. Just the fact that its an air cooled inline 3-cylinder diesel engine is enough to make me want it.