Of the 15000 Z boxes sold I encounted an unusual one today and wonder if 
anyone else has one. This instrument is dated 1972 almost if not the end 
of the run. The keyboard is plastic covered but has short harpsichord 
like keyheads and long black sharp risers. Not the clunky Pratt-read 
variety. Also the jack rail in smaller, narrower without the sponge 
rubber and most unusual has brass brackets slotted fot two screws and 
having a single round post penetrating a hole in the jack rail itself. 
Perhaps these parts were from english kits.
 Everything else looks and sounds the same. Has anyone else seen these 
alternates of the original kit.
I spoke with the builder who swears the parts are all original to the 
kit.  Jack Peters  ??????