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Please help identify the brand of this vintage road bike frame. I am guessing it is from the late 80's to mid 90's.

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  • Really the only distinguishing feature the frame has is the small diamond shape stamped on the frame joint . – Dima Apr 27 at 6:15
  • The reason why I think its mid to late 80's is because it is really light.I t probably has thriple butted Chromoly tubing. The frame does not have the original paint. My guess is Italian. If not perhaps Specialized. – Dima Apr 27 at 6:38
  • Also the BB shell, especially any cutouts on the bottom. You also might have better luck over at the classic and vintage forum at bikeforums.net. There are a lot of vintage bike collectors there who can ID vintage steel frames very well. – Andrew Apr 27 at 13:55
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    Downtube shifters date it to probably the 80s, maybe late 70s. Before that they used stem shifters, and after that they used handlebar shifters. The crank style (not "cottered" and probably square crank end) indicates it's not earlier than the mid 70s. Everything looks pretty standard for the era. – Daniel R Hicks Apr 27 at 17:40
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    Sorry for the delay . Yes did get rid of all the surface rust . There were no cracks on it. since then I did some with the BIke Forum guys, but nothing 100% is determined yet. The 2 closest frames to this one that came up are the Koga Miyata Pro race and the Medeci – Dima Apr 30 at 1:12

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