It's nothing like as clear cut as you've described. Hetchins featured under bottom bracket gear cable guides from the early 50s. And in many cases it was either down to what the framebuilder liked or had in stock or what was ordered by the customer. In both cases there were those who followed fashions closely and those who were more conservative. But you have identified various styles and fashions. Hilary Stone
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>From: Roadgiant@cs.com
>To: OROBOYZ@aol.com, jfbender@umich.edu, classicrendezvous@bikelist.org
>Subject: [Classicrendezvous] A matter of style?
>Date: Fri, Oct 27, 2000, 9:11 am
>
> Listers, (do we have a better collected name for ourselves that I'm unaware
> of?)
> Is it possible to make a general statement about a bicycle's age relative
> to its braze-ons or lack thereof?
> For example: could you say that from
> 1960-73 the general style was no braze ons except top of BB cable guides
> 1973-71 top tube cable guides, braze on shifter bosses
> 1971-1981 underside BB cable guides, top tube, downtube shifter bosses
> 1981-84 full braze-ons including front derailleur hangers, seat tube
> water bottle braze-ons.
>
> And is there a progression of fork crown styles from flat to full sloping
> throughout the same period. And what can be said of the 1950's as regards
> braze-ons?
>
> My Fuji is from 1976 and is as minimal in braze-on's as a 1970 Masi. Was
> is all just a matter of style?
>
> Scott "Great sadness over the Mets loss " Smith