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  1. claude

    claude Apr 4, 2014

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    Hello to all,

    what mouvement schould be in a Seamaster 300 big T from 68 or 69 ?
    The ref is 165.024 and the serial number is 27.xxx.xxx.

    on the net and this forum I found big T's with different mouvements 565, 552 and 563

    Thanks for your help
    Claude
     
  2. Dash1

    Dash1 Formerly: Ash Apr 4, 2014

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    The 565 is the date version (166.024) and the 552 non date (165.024), both are correct for the BT SM300. Not sure if the 563 was fitted, but it's a possibility.
     
  3. Event horizon

    Event horizon faux seller of watches and complete knobhead Apr 4, 2014

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    563 might be the movement for the us market with less jewels
     
  4. kox

    kox Apr 4, 2014

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    Precisely. Just as the cal. 550 was the US version in the 14755, 165.014 and 165.024.
    So yours should be a cal. 550 or 552.