Help identifying missing screws Omega 396.1060

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I opened up my Omega Constellation 396.1060 / 1438 movement and I noticed two missing screws. This is my first watch that I acquired through trading some items. The watch functions perfectly to my knowledge. Can anyone help me figure out the screws part number. I tried doing research but could find anything.

 
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I think those would be ETA part number 5101/471, used in a lot of movements, and not too hard to find. But you should probably wait for someone with full access to Omega's documentation (e.g. @Archer) to confirm.
 
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Omega doesn't call for anu screws to be used there. So likely the enlargement ring (movement spacer) presses on the back side of the dial, and the case back presses on the spacer to keep everything solidly in place.