[ForSale-Swap] Western Union Desk Fax

[Jim Isbell]

I have for sale or swap a "Western Union Desk Fax."

This device was used to create hard copy of  images on sensitized paper. 
 The paper is wrapped around a metal drum and then a stylus causes a 
high voltage spark to jump through the paper to create the image.  It is 
a system similar to Slow Scan TV except that it produces a paper copy of 
the image.  It might even be adaptable to SSTV.

I would prefer to swap it as I haven't the foggiest idea what it might 
be worth.  Any appraisals?