Your opinion on this Seamaster 300 from 1964

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After doing some research I admit: both variants of 6 and 9 (open/closed) are possible. But picture 1 is still confusing: did OMEGA work this inaccurate ?
 
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Could be a service dial

https://omegaforums.net/threads/sm300-dial-what-is-this.36482/

https://omegaforums.net/threads/need-info-about-seamaster-300-165-014-dial.60332/

Looks like serial number plate was transplanted and so you can forget about the extract

18968103-lt47ffwq9b1hs8c6qdouoivo-Zoom.jpg ,