I would never reccomend Kleissler as a seller, but the original post was a question for a low-km 6-gang. And Kleissler has one.....
Recent examples of Kleissler-logic:
A Veilchenblau 964 Turbo appeared for sale in AMS for €37K @ 36k km.
Two weeks later it appeared on mobile by Kleissler for €47K @ 37k km.
Now it is at a Porsche dealer for 52k @ 39k km. Kleissler's sticker is still on the door.......
Another example: an Alpina B6 2.8 e21 with 71.731km appeared on mobile for €15k. According to the add a pristine original car. A friend of mine drove 600km to see it, only to find a car with structural rust damage. Largely original, but a rusty heap nontheless. Guess where it appeared a week later for €30k?
http://www.kleissler-automobile.de/f_1669.htm