Check out these pics from 1971.  What guitar is Jerry playing?  The neck looks to be a Gibson, but the body is unlike any I'm familiar with, and it looks to have been modded with some type of brass plate, maybe?  (Gee, I wonder who could have done that?)
 
Bill, tgo

Could the body be the work of  Rick Turner ?

The body reminds me of the peanut guitar. I found this in a post from Susan in 2004.
 
There were other guitars made at Alembic for Jerry, of the first dozen instruments made, 5 were guitars for Jerry. He wanted a guitar that had the smallest body imaginable, I called them peanut guitars. Those guitars eventually evolved into the Guitar that later became known as Wolf. BTW we currently have a peanut guitar number 6 made for Jerry that we are refurbishing for sale.  
 
Here is a link to the thread. There area couple of pictures if you scroll down.
 
Keith
 
(Message edited by keith_h on September 06, 2010)

Oh, yes the Peanut Guitars !   I remember those now !

In Grateful Dead Gear Turner describes the first one he built (pre-Alembic); it was the neck off a trashed LP Custom for which he built a Stauffer-shaped body out of mahogany w/walnut veneers.  That sounds like this one (check the inlays), and he said he sold it to Jerry, and was an evolutionary step toward Alembic - an inspiration for the peanuts, perhaps?
 
Peter
 
Peter