Still coming up the learning curve on vintage watches. I realize these are chronographs, just curious if there is a specific name for this style of watch? No bezel, thinner hands, long second hand, multiple scales...

thanks

 

I call my example of the type "too damn complicated to read"

 

I like a clean look and a readable chronograph myself.

This:



Is a lot more readable than This:



But I like'm both.

Once upon a time, readability was far more important than it is today.

Today we have our smartphones for readability and when we are in a land, sea or air transport vehicle, we have our GPS or other electronic navigation instruments to tell us the time more accurately.

Aren't our chronograph watches mostly just jewelry for men!

[No laws prohibiting women from wearing them either.]

 

To answer your question, most are referred to as “Telemetres”. There were a ton of these made post WWII (I have a few and love them) through the early 60’s using Landeron movements for the most part, some Venus. They tend to be plated snap-back cases, on the small side for a chrono (around 35-36mm) have rectangular pushers and non-waterproof cases.
There were higher grade ones (like that UN I believe), and some done in solid gold cases (I have my fathers 1950’s B&M 18k Telemetre).
They usually suffer from moisture damaged dials but can be found fairly clean and at bargain prices if you are patient.

one of my personal favorites:

 

Sure, it's a Calatrava-style chronograph.

 

FIFY

 

The dial in your first example is sometimes referred to as a snail dial (or snail-track dial) due to the spiral tachymeter in the center: