#3 Lume difference 165.024

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I've read somewhere on this forum about it not being uncommon to see the #3 lume to be darker. Is there a reason for this. It's Tritium glows the same as the rest.

 
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Mine isn’t darker?
Because it is next to the crown.
I did consider that. I guess the color will vary depending on humidity of where the watch lived.
 
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Mine isn’t darker?
Drier climate possibly? Mine spent most of its life on the North West Coast of Canada. 80+% humidity
Edited:
 
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Sure the reason is that it is close to the crown tube, as this is the weakest point for water intrusion. Its expect on such a watch also traces of oxidation on the base plate of the movement under the dial and crown stem areas.
Following discussion is irrelevant, as all depends on what life the watch lived in last 60years, including usage, climate, service periods...
 
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Drier climate? Mine spent most of its life on the North West Coast of Canada. 80+% humidity? Dunno.
You must be living very close to me then.
 
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Sure the reason is that it is close to the crown tube, as this is the weakest point for water intrusion. Its expect on such a watch also traces of oxidation on the base plate of the movement under the dial and crown stem areas.
Following discussion is irrelevant, as all depends on what life the watch lived in last 60years, including usage, climate, service periods...
While I agree that the theory of moisture intrusion at the crown may explain the #3 discoloration, it's interesting that it would cause discoloration of just that one particular plot.
 
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While I agree that the theory of moisture intrusion at the crown may explain the #3 discoloration, it's interesting that it would cause discoloration of just that one particular plot.
I asked myself the same thing, and if it weren't for hearing/seeing about others with the same anomaly I'd say it was odd.