There’s lots of good info on Dynamics here
http://download1639.mediafire.com/zyjem0x3xm2g/knazxmyqdzd/Omega Geneve Dynamic I .pdf
Yours looks to be the ladies version (30mmx26mm) with a racing dial. They came in many different dial variations and being the ladies model you may struggle to find others the same. Originally you would have had the choice of metal or leather strap. It will likely date to late 60’s/early 70’s. The movement will probably be a cal 681.
The second hand on yours should be red, the rest looks correct from what I can see.
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