[Milsurplus] ww11 Navy code practice set

[Mike Tara]

In ww2 the Army had the an/gsc1 code training set. the Navy had their own 
version of it. has anyone ever seen one .it was O.D green, it had places on the 
front for code keys. it was an AC/DC unit that a 117z6 tube as a rectifier.it 
was smaller than a an/gsc1.it had a folding door on the front and a carring 
handle on top.the keys fit in the door. does anyone know the Navy designator on 
it? it had a badge on it, on the bottem of the badge it said  Navy  Dept Bureau 
Of Ships