[CR]Shimano Forged Dropout Intro Timeline?

Example: Framebuilding:Norris Lockley

Date: Thu, 26 Jan 2006 13:14:00 -0800 (PST)
From: scott davis <francopedia@yahoo.com>
To: classicrendezvous@bikelist.org
Subject: [CR]Shimano Forged Dropout Intro Timeline?

I'm trying to date a frame w/ Shimano forged drops. Anyone know when Shimano introduced forged long dropouts w/ derl. hanger? They look similar to Campy only beefier. Were they seen before Dura Ace in the 70s? Scott Davis St. Paul, MN USA http://www.sdbicyclegarage.com

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