The Superspeeds were made from the '40s into the mid-'80s. Over this several-decade long run that produced millions of razors, the entire design, head geometry, and all of the materials changed several times. The design, materials, embellishments, finish, etc., of a late '50s SS is completely different from a late-'40s; and the SS's from the 60's, '70's, and into the '80s show this same progression.
The common thread is that in the Superspeed, Gillette produced a good quality, reliable, middle of the road, fixed head, TTO, good shaving razor at modest cost --by the millions-- for the shaving public. There are many models and variants spanning the 40 or so years of production.
Frankly, they all seem to shave pretty well and all were of excellent quality, both mechanically and cosmetically. The low profile head was introduced in '60, and the profile was further 'flattened' in the mid-70's. I consider the mid-50's to be the golden age of the Superspeed.
-- John Gehman
- [URL="http://badgerandblade.com/vb/showthread.php?t=9553"]BroJohn's Hall of Fame entry [/URL]