Old 05-02-10, 05:55 AM
  #22  
roccobike
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Location: South of Raleigh, North of New Hill, East of Harris Lake, NC
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Bikes: Specialized Tarmac, Specialized Roubaix, Giant OCR-C, Specialized Stumpjumper FSR, Stumpjumper Comp, 88 & 92Nishiki Ariel, 87 Centurion Ironman, 92 Paramount, 84 Nishiki Medalist

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As far as I know, Giant always stamped their frames with the letter "G" and with the four number date code on one of the dropouts. I don't recall the Sierra's having that code stamp.
Just sayin'
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