In terms of classic chronographs for Gentleman in the 1960s, the Omega De Ville 145.018 would of been the ideal choice for its legibility and clean lines, it exudes that tool watch, utilitarian feel. I also wears really well at 35mm.
 
This model, produced using the caliber 861 which was also used in the Omega Speedmaster was seldom seen with blue dials or balck dials, and this particular example has a really special galaxy dial, developed through a defective laquer used in the Omega factory that caused these originally blue dials to turn this amazing golden, galaxy colouring. 
 
As you can see small remnants of the original blue paint on the outer scales, they contrast the gold dust effect that has taken effect over the years. It is stunning in the metal, and evenly spread to give it a unique quality, and new asthetic.
 
You have to witness this dial in all its glory in direct sunlight, there it really comes into its own!