I personally know the car and followed the restoration , somewhere I have a picture of the Kardex of the car and try to find it to post it later, so I guess, this will answer Davep´s questions! The story is very simple and pretty clear:

Karl von Wendt bought the Porsche 911 with the chassis no. 303785, color white, as a used car from Friedr. Carl v. Graf Hardenberg, Hannover Germany.

He drove the car from 19.3.1967 till 2.7.1967.

After a total loss at the Nürburgring (July 2, 1967), Porsche replaced this car for Karl von Wendt with a replacement body with the chassis number 13448 (FIA replacement numbers 134ff, see enclosed).

The racing career of 13448 began with the first race at Spa, 22/23.7.1967.


These details are from the two Kardex cards from Porsche.

As far as I know, the car is well documented and there is a book by the author Ulrich Trispel, Bielefeld Germany, about the Porsche 13448.