Tim,
I spoke with Ron Cooper this morning. Based on the serial number, which he assumes is from his export series, he estimates the frame is 8-10 years old. He said he started the export series with #101 around 1969-1970. If your frame is not an export, it is obviously much older than 8-10years. If you email me a jpeg, I will be happy to forward it to Ron. He said it would be best if you also include close-ups images of the lugs. He will also cross reference the frame to his registry.
All the best, Brett Horton San Francisco
<snip> I have a Ron Cooper frameset with serial #922 on the frame and fork. Can anyone date this frame approximately? Tim Wilson Corte Madera, CA <snip>
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