Tri-Compax Strokes at 3 - 6 - 9

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Can anybody tell me what these three extended strokes at 3, 6 and 9 on the minute-stoppwatch-dial means or are good for?
 
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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 馃榾
 
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Long ago. When international call were costly and were paid in blocks of 3 minutes
 
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Thank you for the info. I would never have thought of that in life. you can see how quickly times change
 
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They are called telemetry marks.
 
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They are the price, in thousands, for a low, medium, and high end Tri Compax from the 40s
 
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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 ;-)
 
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Does anybody have a very narrow brush. I have to do some strokes in the hour dial ;-)

what鈥檚 the case reference and serial ?
 
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They are the price, in thousands, for a low, medium, and high end Tri Compax from the 40s
So in other words, UG are fortune tellers and those lines are representative of their crystal ball 馃槈
 
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ref: 22242
serial: 110xxxx

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
 
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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鈥檚 thing. For this reference, I鈥檇 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.
 
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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鈥檚 thing. For this reference, I鈥檇 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
 
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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鈥檚 even more special since it was your dad鈥檚.
 
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I love your watch. It鈥檚 even more special since it was your dad鈥檚.
True, and not for sale regardless of the price