Can anybody tell me what these three extended strokes at 3, 6 and 9 on the minute-stoppwatch-dial means or are good for?

 

It was to keep track of how much time you had when you used a payphone

 

Long ago. When international call were costly and were paid in blocks of 3 minutes

 

Thank you for the info. I would never have thought of that in life. you can see how quickly times change

 

They are called telemetry marks.

 

They are the price, in thousands, for a low, medium, and high end Tri Compax from the 40s

 

Does anybody have a very narrow brush. I have to do some strokes in the hour dial ;-)

 

what’s the case reference and serial ?

 

ref: 22242
serial: 110xxxx

 

So in other words, UG are fortune tellers and those lines are representative of their crystal ball

 

cool, it looks great. I'm a bit fuzzy on the switch over from moonface to no face discs, which is why I was wondering on the serial/date

 

As we know, the original moon faces did not hold up well. Whats odd here is that we have an original dial (nice) with what appears to be a service moon disc. Far as I know, the transition to faceless moon was a 50’s thing. For this reference, I’d expect to see a service moon and the service dial. there was a hands relume at some point. Perhaps the moon disc was swapped out.

 

My Tri is an heirloom from my father and he always sent it directly to Universal Geneve for service. I even have a second dial (exactly the same, but lume is worn out). I think Universal Geneve changed moon disc once, and in this way it is also quasi "original". At least for me

 

I love your watch. It’s even more special since it was your dad’s.

 

True, and not for sale regardless of the price