Old 01-22-10 | 10:09 PM
  #17  
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EjustE
sultan of schwinn
 
Joined: Sep 2009
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From: Lehigh Valley, PA
Originally Posted by illwafer
SN is: E5K7C84

E = TX500,
5 = 25.5",
K= November
7 = 1977

So, 1977 TX500 with
Ishiwata 022. Strange how this was modded then. Lots of upgrades that probably occurred around 1983-4?
This is consistent with the SunTour GS dropouts as well. Mountech derailleurs were introduced at 1983, so I think you are correct about the timing of those upgrades
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