Can anyone identify the caliber/year of this Zenith and recommend any quality service center? I'm prepared to pay the cost. The case number is 570192 (18 carat). Many thanks!

 

That's a cal 126-5-6. The movement was manufactured in 1954. My recommendation would be to find a reputable independent watchmaker in your area, or send it off to one.

 

Thank you, MMMD, for your help. I appreciate it.
Sincerely, Altiery

 

Here it is after a complete overhaul. The movement received special care. But it looks not appreciably different from the 'before' photo above. Thank you, Zenoforumers, especially MMMD. -Altiery

 

Wow, what a transformation. Looks 10x better in my estimation

 

Nice jod, looks amazing

 

There's been some debate on the typeface used on 1950s Zenith dials. Some insist a sans-serif was used. This particular Zenith was purchased in Switzerland by the American painter Clinton Blair King. Likely not counterfeit.

 

Here's the dial again at 15x enlargement.

 

Lovely watch...