Guys, it's definitely an Exakta. It doesn't have a conventional top plate, the body is full width with the mirror box, and there is a rewind knob on the bottom of the camera. It won't be anything else. Besides the book "One Man's Wilderness" makes several references to him using an Exakta. It's an Exakta.
Take a look at this sideview of a slightly older Exakta: http://www.flickr.com/photos/urmelchen/4236011947/
Even though it has a WLF instead of a prism, you can see the slow speed knob on top, the rewind knob on the bottom, the chrome hinge, and probably most tellingly the chrome strap lug standing out against the black paint around the top of the camera (no chrome top plate as on most cameras).
The lens is also almost certainly the 300mm Meyer Orestegor: http://m42.org.ua/407 the silhouette is pretty distinctive, and note the location of the rings.
Last edited by Yashinoff; 04-11-2013 at 11:38 PM. Click to view previous post history.