The Unica saddles ..
The first nylon (plastic!) saddle to gain popularity with the pro bike user..
      

Click on model name to see illustrations of that model:

Mod. 50 black (uncovered plastic)
Mod. 55 black perforated type (uncovered plastic)
Mod. 65 "CAMPIONE DEL MONDO" leather covered (no padding)
Mod. 65/C covered with chamois leather (no padding)
Mod. 65/N covered with buffalo leather (no padding)
Mod. 70 "CAMPIONE DEL MONDO" leather covered, quilted type
Mod. 75 #1 "Tour de France", covered with chamois leather, and cross-stitched
Mod. 75 #2 "Tour de France", covered with chamois leather, softened type (padded)
Mod. 75 #3 "Tour de France", covered with buffalo leather, softened type (padded)
Mod. 75 #4 "Tour de France", covered with smooth leather, softened type (padded)

Thanks to Chuck Schmidt

Market overview:
"The oldest/rarest Unicanitors (other than the uncovered ones that don't say "Cinelli') are covered in plain 
leather and have labels in aluminum foil on the underside of the saddle.  I have such a saddle and it came 
stock on a 1970 Cinelli Super Corsa.
Next come the saddles with no name on the back but with the logo on the side like all the others.  
Also ultra desirable are the Unicanitors which have the legend "Cinelli" on the rear end in block 
letters.  More recent (80's) have the legend with the flying C logo in the spelling and have a Flying C at the nose 
of the saddle.  These ride just as well but sell for less as they aren't as "vintage" and aren't the saddle from the 
1970s peloton.  Most (but not all) saddles are covered in smooth leather, Pakistani buffalo hide or suede.. 
Some sellers erroneously describe suede as buffalo hide.There is nothing wrong with buffalo hide or suede 
but most prefer the smooth leather.  I own all three types and vintages and they all work fine.  Prices on 
Ebay have ranged from seven dollars to $525 for the foil label ones. ...... Also the old foil  label models 
are just a tad wider."       Roland Porter

Unica seat posts

Standard version with odd plastic plug compression...
(4 pictures)

Special "Uni_seat + post"