14K gold-case Omega Constellation, 564 automatic

Hi All,

I'm new to collecting vintage Omegas so I was hoping to get an education/help from members of the forum. I know a seller that has several vintage Omegas and I'll start a thread for each one I am potentially interested in. This is the fifth one. Attached are some pics that are available and below is the information the seller has provided. Does this raise any red flags for anyone? And if this seems legit, what would be a fair price to offer (please be sincere in this feedback - I want to offer the seller a realistic price but one that is not unfair to me). Thanks!

Info:
14K gold case Omega Constellation , 564 automatic with date date, octagonal dial, made in Switzerland circa 1966 -67 :

• 14K gold shell, vortex bottom with engraved icon of observatory, 168005 shell symbol, with 14K gold stamp inside the bottom and upper shell, the shell is still very beautiful and sharp, with 2 layers of water-resistant pad intact;
• the original 564 automatic, with a date - quick calibrator (recoil calendar), 24 jewels, correctly adjusted at 5 different positions and temperature, very new and clean;
• The original silver-white dial with 5 lines of text is flawless (the specks in the photo are due to light effects).

Watches have beautiful, original and genuine design and form (excluding the strap), running consistently and on time.

All correct. Needs pic on crown.

But I still prefer ones with small hour marker next to date window and black onyx inserts than black paint on tops of those markers.

Thanks!