as an early color it bears the same code number 622 or beige/grey (beigegrau) also Oxford grey
found it for 70-71 and 72-73
Farben 911 1972-73
more on this color:
http://forums.pelicanparts.com/porsche-911-technical-forum/687023-72-911t-coupe-color-help-code-622-9-2-a.html