In a significant change of direction, the Stuttgart-based company stopped making tractors in 1963 - the same year it began production of the now legendary 911 sports car of his.
But the 120-horsepower two-cylinder tractor with a bright red cover typical machine has currently building a loyal customer base for their big performance consistently demonstrated.
Between 1950 and 1963 some 120,000 were produced. Estimated that about half of them can still be found, if not in pristine condition.
Restored examples can now fetch up to € 18,000, the Frankfurter Rundschau newspaper said on Wednesday, but even bashed is still worth a lot - and their value increased.
"A few years ago you could get one was found in a barn halfway passable for € 2,500, but now you'll have to spend a minimum of € 3,500 for one that can move on its own," said Winifred Urner a paper fan.
Now Porsche-Diesel Club Europa (PDCE) has 900 members, who between them have about 5,000 of the red tractor, club president Harald Stegen told the paper.