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Old 25 January 2020, 09:22 AM   #1
donald83
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Difference BTW 16700 and 16750

I am looking out for a vintage and narrowed done to these 2 ref.

What are the main differences BTW these 2? I only know that 16700 has sapphire while 16750 has plexi.

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Old 25 January 2020, 12:30 PM   #2
Jackie Daytona
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I believe it’s mostly a movement difference. The 16700 had a hacking feature I believe. I thought the 16750 had sapphire crystals about halfway through their run.
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Old 25 January 2020, 03:31 PM   #3
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I’m sure you’re aware of this resource, right?

http://www.gmtmasterhistory.com/index.html

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Old 25 January 2020, 11:44 PM   #4
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Difference BTW 16700 and 16750

Both refs had lug hole cases, tritium lume and are gmt master (1)s - so can only measure 2 time zones

16750 had plexi all through its run - up to mid 1984 they had matte dials, after this gloss dials with gold surrounds

16700 always had sapphire

16750 had cal 3075, 16700 had 3175

16750 sold from 1981-88, 16700 from 1988-99

Both are fantastic references, but early matte dialed 16750s go for a hefty premium (maybe 5k) over later 16750 and 16700 examples (expect to pay @$10k now)




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Old 26 January 2020, 01:34 AM   #5
springer
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Quote:
Originally Posted by donald83 View Post
I am looking out for a vintage and narrowed done to these 2 ref.

What are the main differences BTW these 2? I only know that 16700 has sapphire while 16750 has plexi.

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Try this thread on the GMTforum.com

It compares all the various GMT and GMT II models and the differences between each model.

https://www.gmtforum.com/viewtopic.php?f=3&t=265
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Old 26 January 2020, 04:18 AM   #6
Tools
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The 16700 eventually replaced the 16750.

The 16700 introduced the sapphire crystal, the "160 click" bezel, and modified the movement slightly.
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Old 26 January 2020, 04:46 AM   #7
sillo
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Different movement - 3075 vs 3175
Different crystal - plexi vs sapphire
Different Bezel - friction bezel vs 120 click bezel. Inserts are also different size. 16750 has a larger insert.
Different Case
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Old 26 January 2020, 10:21 AM   #8
donald83
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Is the 16750 more collectible in a way?

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Old 26 January 2020, 10:41 AM   #9
springer
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Is this another "value" or what's it worth thread??? How about you worry less about value and deliver a big "thanks" for everyone that helped you out.
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