I would like to learn more about this Omega automatic. Date of manufacture, special features or facts and an estimated value. It measures 32 mm across the case.

 

US made case so not really a model number

It’s not solid gold.

Serial number on the movement and a quick google search will tell you the approx age.

Movement is a 342.

 

The case looks a lot like my American cased Longines, though it is solid gold. It dates from 1953.