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Old 4 March 2024, 02:51 PM   #1
T*M*M
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Mk4 or Service Dial

I’m no expert on vintage. I’m trying to figure out if this is service dial or a mk4. Any help is most appreciated.


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Old 4 March 2024, 04:58 PM   #2
swaini3
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Service dial
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Old 5 March 2024, 02:06 AM   #3
Gaff65
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Quote:
Originally Posted by swaini3 View Post
Service dial
What are the telltale signs of a service dial?
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Old 5 March 2024, 02:49 AM   #4
springer
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Quote:
Originally Posted by Gaff65 View Post
What are the telltale signs of a service dial?
The quickest way to determine if a GMT 1675 has a service dial is to focus on the coronet. The only matte GMT 1675 with that short fat style of coronet was found on the service dials.

Below is a Mark IV dial and below that is a tritium GMT 1675 service dial. Additionally, there is also a luminova service dial found
on some GMT 1675s which has the same style coronet on it as the tritium service dial.
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File Type: jpg mark 4 dial.sm.jpg (127.4 KB, 62 views)
File Type: jpg service dial TRITIUM.jpg (130.5 KB, 62 views)
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Old 5 March 2024, 03:01 AM   #5
T*M*M
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Quote:
Originally Posted by springer View Post
The coronet. The only matte GMT 1675 with that short fat style of coronet was found on the service dials.

Below is a Mark IV dial and below that is a tritium GMT 1675 service dial. Additionally, there is also a luminova service dial found
on some GMT 1675s which has the same style coronet on it as the tritium service dial.

This is really great info, Thank you.


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