Little has been said about Steven "item 7131255313" Maasland's excellent mini-timeline of Cinelli bars and stems, so I'll take a shot.
I think that like the bars the earliest stem was non-anodized. Also I think that most early to mid-60s bikes with the aluminum bars usually got a steel stem, not the alloy 1A, so these non-anodized 60s parts are extra-rare!... see - http://www.velostuf.com/
The gold-winning Italian pursuiters in 1960. Are those early Cinelli alloy bars/stems?
http://www.sportline.it/
Probably not is the answer. According to Andrea Cinelli (interpreted by Steven) they were shown around that time but probably not produced or raced.
Maybe it could be another "open question" about Cinelli dating. But i'd love to dig up more on those riders ... Giacomo Fornoni, Antonio Bailetti, Ottavio Cogliati and Livio Trapè ... the last being the silver medalist in the road race too.
Cinelli during the 1960-65 period is interesting because it encompasses the 1a stem and aluminum bars, the bivalent hubs, the smaller badge, the 74mm bb shell going to 70mm and losing the oil ports, losing the ears on the lugs, the unicanitor, the cranks, and many other projects for hour records and such. The amount of development between the early 60s catalog and the 70s catalog is enormous.
Lastly did anyone record (late and great) Dave Staub's presentation at the VR?? http://www.velo-retro.com/
Jack Bissell tucson, az
2 more links:
http://www.petry.org/
thread last april about cinelli dates<http://search.bikelist.org/?SearchString=cinelli%20years&SearchPrefix=@msgsubject&Scope=classicrendezvous>
__
a list of the steel bars: M.11 SanRemo M.12 Gran Fondo M.13 Giro D'Italia M.14 Pista M.15 Koblet M.16 Tour de France. -- and Steven's stem timeline: 12 mm bar-clamp bolt, grooved clamp surface, no patent number marking on the bottom of stem extension (perhaps only sticker), 7 mm allen key expander bolt with tongued wedge (the tongued wedge is the defining feature)
12 mm bar-clamp bolt, grooved clamp surface, no patent number marking (perhaps only sticker), 7 mm allen key expander bolt without tongued wedge. This should be about 1969.
12 mm bar-clamp bolt, grooved clamp surface, patent number 981528 marking on bottom, 7 mm allen key expander bolt. This should be until about 1972.
There may also be a version with allen key bar-clamp bolt, patent number marking on bottom and 7 mm allen key expander bolt, but I have not yet seen one.
5 mm Allen key bar-clamp bolt, old logo, grooved clamp surface, patent number marking, 6 mm allen key expander bolt.
5 mm Allen key bar-clamp bolt, old logo, ungrooved clamp surface, patent number marking, 6 mm allen key expander bolt.
Allen key bar-clamp bolt, new logo, patent number marking, 6 mm allen key expander bolt. This is from 1978.
also handlebars : I was under the impression that non-anodized preceded anodized, that 26.4 mm preceded 26.0 mm, that no model number stamp preceded stamped model number, that crest preceded flying C (I am certain of this one!), that the double crest stamping were generally errors and that the two rings of serrated rings preceded the three serrated rings. __