Rolex 645 Rotor
 

I'm really hoping you all can help me out with some information; I'm at a bit of a loss. I've seen a ton of images for rebuilding a Rolex 645. I purchased one that came with a detached rotor, only to find it looks like the rotor is wrong for the movement (doesn't have the cutout for the second retaining spring/gear)

I'm exploring options and see there are a few rotor frames on ebay that may fit. Can anyone tell if which rotor I have, and if the parts that are interchangeable with the one I need?

I can't post links, but ebay number 275933316450 is one I was considering

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Don't know if this helps you... Good Luck

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