[kach22i]

I've never seen a 911 in this color (in person), it's a 356 color but I don't know it's name.

Curbside Classic: My All-Time Favorite Car – 1958 Porsche 356A | The Truth About Cars


Perhaps Dolphin Gray?

Porsche356Colors



http://forums.pelicanparts.com/porsche-911-technical-forum/674194-pic-request-backdated-diamond-blue-carrera.html

Originally Posted by R K T

Agree. Most (if not all) are painted in period correct early 70s colors like signal green, gulf blue, or the always favorite....white. Mine was taken even further back to a 356 color, Dolphin Gray.