Seamaster cal. 564, help needed!

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Can you tell us what movement you love to work on?

Whatever movement hasn't been hacked up by some other "watchmaker" in the past, that isn't all worn out, and that I can readily get parts for.

Sometimes a 55X/56X series is a joy to work on, and sometimes a nightmare. Sometimes a 1010 series is a joy to work on, but sometimes a nightmare. Condition is everything.

If I had to pick the movement that I expect the least issues with, it's the ETA 7750 and it's variants.