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Thehighwayman
·Thanks Thehighwayman, very helpful. I've only seen used or salvaged movements from donor watches like you, so never seen this before either. I took the advice of several on this forum and decided to make a small investment in buying some N.O.S. (new old stock) while these higher quality seven jewels and more durable ETA movements are still available in market. That way if I need a new coil or circuit board, I have spare(s) readily available. Should keep my quartz Tags in good working order for rest of my lifetime and then it becomes my son's problem to find another or service. Here is top shot zoom of this new movement (in bag). I wanted to keep everything intact so I did not remove from packaging. It looks like it was shipped with hour wheel attached (I've seen them shipped in small separate bags normally).
The older tech sheets for this movement don't show that clip, the newer one does and actually lists it with a part number.
It's definitely for transit, you couldn't get the dial or hour hand on with it in place.
It's certainly not a bad idea to future proof your watches by doing this. The only thing I would say is that if stored for years on end the "new" movements would then benefit from a service too.