My affection for watches from 30s and 40s with telemetre / tachymetre scale has brought me to this watch.
The watch simply catched me because of the black dial, the scales and the unorthodox lugs:





The diameter is around 35.5 mm.

Hard to find any information on this one but what I assume is that it is similar / or in fact a Breitling from the 30s / late 30s delivered to the jeweler American Swiss in South Africa in the using their inscription of the House Brand 'Union Special" on the dial.
The engraved number at the back falls in the Breitling range from that time and is a few 2digit thousands lower but somewhat close to the one below from Matthew Bain.


https://www.matthewbaininc.com/watch-details/2228

https://www.timeline.watch/watch/1938-breitling-chronograph-tachy-telemeter/

Just for the records (if ever the pictures will be vanished on Matthew Bain website) I post the information:







Would be happy if anyone can add up to Union Special watchbrand and also to this model/dial (was used I assume for various brands).

 

Very nice dial and watch, thanks for sharing.

 

Very appealing appearance and a great vintage size too. Thanks for posting an uncommon chronograph watch for us to see!

 

The dial is remarkably similar to my clamshell..

 

NICELY by Breitling late 30's with Venus cal170

Copper accents still intact.

 

Can you post the link?

 

The URL is at the top in the “Nibo” box

 

Thanks - quite hidden

Very good website (www.mikrolisk.de) and I also checked before.
Filling in "Union Special" it indicates Hamilton.
But somewhat can't conclude it's a Hamilton watch as it looks like a Breitling - also I assume the production number at the back is Breitling.

From my point of view the Information on this website on "Union Special" is not really related to the watch model from post #1 here.

 

Hamilton made the model "Union Special" pocket watches back around 1900 or thereabouts

 

I came across this thread whilst looking for info about my dad’s Breitling Union Special which I do from time to time.