In a message dated 8/12/2002 1:32:21 AM Eastern Daylight Time, mbikealive@dslextreme.com writes:
<< From my experience, alloy bolts seem to be predominately from 1978. 1981 seems WAY too late for alloy bolts appearing on a SR r. der. >>
I agree with Marc... SR rear derailleurs certainly started their production life using Ti bolts... When I was selling that stuff way back then, the industry word was that there was somehow a Titanium shortage (?) so Campy substituted aluminum alloy bolts as a temporary measure. It only lasted about a year until the Ti bolts began appearing on the derailleurs again.
Dale Brown Greensboro, North Carolina <A HREF="http://www.classicrendezvous.com/main.htm">Classic Rendezvous</A>