omega automatic seamaster de ville 14k solid gold?

i have my eyes on this omega automatic seamaster de ville, the seller claims its gold plated.
but i am no sure it's gold plated.
the seller does not have pictures of the caseback so i need your expertise.
what makes me think it might not be gold plated is the caseback.
i have not seen a caseback like that being gold plated but i could be wrong.
i can´t see any marks on the lugs (there might be one on the lower left lug) which would indicate 14k solid gold but i have asked the seller for close up pictures.
let me know what you think

thanks in advance.

although not of utmost importance, I believe the crown is a replacement.

also, I have seen plated pieces with backs like this so would have to open up the caseback or look between the lugs

I had model like this some 2y ago. it was gold filled not plated. but still not gold.
cal563?

Well, buy it as gold plated and if it turns out solid gold..Bingo! 📖

yes! My had that, I try to find some picture of it.

thanks for all the advice, unfortunately i can't see any marks on the new pictures seller has sent me, and i think the price (870 euro) is to much for a gold plated example