Omega Constellation solid gold casing, automatic 561

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 fourth 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:
Omega Constellation watches made in Switzerland circa 1966:

• 14K solid gold cast shell, very dark yellow color - beautiful
• 561 automatic machine, 24 feet, adjustable 5 positions;
• the dial of the cake pan is spotless,
  
• Genuine hands, crown, strap and buckle (gold plated).

The watch has a beautiful, original and 100% genuine appearance, is running steadily and on time.