[CR]advice needed, year of build of a frame

(Example: Component Manufacturers:Campagnolo)

Date: Fri, 4 Nov 2005 16:53:45 +0100
From: "Freek Faro" <khun.freek@gmail.com>
To: classic list <Classicrendezvous@bikelist.org>
Subject: [CR]advice needed, year of build of a frame

Hi listmembers,
   I hope you can help me with determination of the year of build of this old frame i have. The funny thing is that when i showed it to the man that buil d it (Ko Zieleman), he couldn't point it down exactly. I know it's either fro m the second half of the 70s or possibly 1980, 1981. What I'm looking for is the earliest possible date, given the parts used on the frame. With all the detailed knowledge available on this list, I'm sure your advice will be helpful. Here goes: Cinelli investment cast bb shell, cable guides on top of bb shell, investment cast seatstay caps, Reynolds 531 'fat' fork blades (new continental oval?), bosses for gear levers, Campagnolo short rear dropouts (with the little holes in it).
   Pics of the frame can be seen in my wooljersey album, it's the rusty blue Zieleman: http://www.wooljersey.com/gallery/album143
   Thanks in advance for all your help!
   Freek Faro Rotterdam Netherlands