Unica-Nitor line up from an early 1970s Cinelli catalog:
"UNICANITOR - CINELLI" RACING SADDLES in rislan:
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. 2 "Tour de France", covered with chamois leather, softened type (padded) Mod. 3 "Tour de France" covered with buffalo leather softened type (padded) Mod. 4 "Tour de France" covered with smooth leather, softened type (padded)
(I added the comments in brackets)
Chuck Schmidt South Pasadena, Southern California (55mi ride on fixed gear with sunny, clear, 82 degrees and breezy Santa Ana condition... sublime!)