Help with verification and diferentiation Omega 7320.34.XX

Hello! I'd like to purchase golden omega watch and found this one (link at the bottom). I'm not sure if it's original though. When I try to decode Ref. number it says that this watch is not gold. Also I'm not sure if the omega logo should be black or gold, because I've found different photos on the internet. I'm getting super confused about models 7320.34.XX. Can someone help me with it?

1. Watch I want to buy (more photos in link)



2. Same ref number, different omega logo.



3. Different ref number, same omega logo.


Watch i want to buy: https://www.chrono24.pl/omega/omega-de-ville--id32856594.htm

Watch with same ref no. but gold omega logo: https://www.antiques-art-design.com...a-de-ville-wrist-watch?variant=40020090585206

Watch with same omega logo but different ref no.: https://www.ebay.pl/itm/276286696074