Hello, I have recently been offered a Porsche 312 Algaier tractor from 1954. I only have the information that it is complete and functional, the manual is also available. Can anyone tell me what value such a vehicle has? Is this a very rare part? Gruss Christian http://www.tractorshed.com/gallery/identify/v6863.jpg http://www.tractorshed.com/gallery/tphotos/a2273.jpg http://www.coffeenews.ru/mail_list/PorscheTraktor.jpg