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  1. Don’t know much, but it is newer than Reynolds 531. 531 was manganese steel, that had to be hand-made. After 70s the industry moved to chrome-moly, because that could be used in serial production. This is basic chrome-moly, so a grade below 531, but it’s stiff. The better, heat-treated tubings are better than manganese steel, which cannot be heat-treated, and have higher model numbers.

  2. RooibosContactHigh on

    My 501 Peugeot is from ’85 but wikipedia says that the tubing was introduced in ’83, so I would imagine 500 made an appearance around that time also.

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