The ETA Valgranges A08.L01 is a column wheel chronograph version of the famous works horse the Valjoux / ETA 7750, developed by Longines and used by Omega at one stage.
The following images are for reference of the take apart of one for servicing
Kendal, Cumbria
Cumbria Watch Repair 
Hey Dan, do you recall if this movement had a vertical clutch?
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hi sam – this is a horizontal clutch like the 7750
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Hello,
Just wondering if in this movement the minute recorder cam can rotate relative to its wheel. There has to be a clutch or slip interface to allow the minute recorder and the seconds chronograph wheel to reset independently since the latter is connected to, and drives the minute recorder continuously, rather than by a finger that makes it jump once a minute.
Can you confirm this is correct?
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I don’t believe it does, I believe the hammer resets the seconds recorder, the drive wheel from seconds recorder drives the minute recorded to reset, the torque is offset by the free play in the hammer head, which in turn finally rests holding both recorders in place – that’s my take on it from memory
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