Thank you very much!
Great 3D model. It would have been very helpful to have those photos of the details first!
At the top is where I had the most doubts. Because I didn't have good quality photos of that 3D model.
I decided to be guided by other buildings that the Architect made. And above all with the Rockefeller Center, in which he participated:
"Later, in the 1920s, Harvey Wiley Corbett was part of one of the three firms that designed Rockefeller Center in New York. [5] Corbett, however, left the Rockefeller Center project in 1928, so was able to work on the plans for the Metropolitan Life North Building, designed as a 100-story skyscraper and the tallest building in the world. "
So the top is a mix of Rockefeller Center style and original volumetry.
The antennas is a separate issue.
The original design surely did not include a Chrysler Building-style spire. But in 1950 with the advent of television they needed an antenna for coverage of Manhattan Island. At that time the highest point was the Empire State Building, but MetLife North would have been the chosen one.
I tried with a central antenna but it did not fit well with the design. It seemed more harmonious that they are two symmetrical antennas in the style of some Chicago skyscrapers.
In the photomontage of the old photo it does not have them.
Just my assumptions, of course.