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Old 3 August 2017, 01:24 PM   #1
T0m0ya_0kazak1
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GMT case sizes

Hello everyone,

I am also new to vintage Rolex, particularly the GMT. I am looking to purchase one and I am more so into the fit of the watch; so I am wondering about case thickness and bezel diameters in millimeters of the 1675, 16750, 16700 and the 16710.

Unfortunately I have spent much time searching on-line, only to not find any definitive answers, especially on the older models. Some say the 1675 and 16750 have the same case, others say they do not. The 16700 is supposed to be smaller than the 16710, but I am unsure as to what that actually translates to in numbers. Also measurements between the newer models differ much between websites.

If someone has these models and a pair of calipers to get the answers that would be amazing; photos comparing the sizes of the models beside each other would be great as well.

Thank you in advance
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Old 3 August 2017, 06:00 PM   #2
roh123
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I can't say for certain as I never measured them. I can say this though.. 1675's are about 4.5mm thick. Early ones before 1.8m or so are sometimes called slim case where the shape of the normal crown guards is a bit different from later on. It is flatter on the top side where as the lager are more rounded. I don't know if the thickness is different and to be honest I don't think it is. If you are looking for the slimmest one to wear I think you should try them on instead of gathering data. Personally I would say that the 1675 on a rivet or folded bracelet sits very tight and flat to the wrist so that would be my suggestion if this is what you are after. Overall the models you list are very different so go and check them out to see which one you like the most. Many prefer the matte 16750 as it has a quickset movement and is a pretty modern watch with vintage features. Personally again I prefer the early cases with broad chamfers (and gilt dials) which I think look way better. Each to their own on this though.

Good luck!
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Old 3 August 2017, 07:43 PM   #3
chessebj
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1675s are definitely not 4.5mm thick. They also aren't 14.5mm thick, so I don't think that was just leaving off a 1. I just took a digital caliper to my '68 1675 and it's 12.61mm, caseback to crystal, not including the cyclops. I figure there will be some variation, depending on exactly what crystal is installed, and how it is seated, along with case polishing variations, though I wouldn't expect the thickness of the case to change much with polishing. *shrug* The 1675 does sit very flat to the wrist, and wears much thinner than it actually is. I can usually wear my GMT under properly fitted shirt cuffs, so I find it highly appropriate for suit wear, unlike my pre-moon Speedy.
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Old 3 August 2017, 07:55 PM   #4
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Quote:
Originally Posted by chessebj View Post
1675s are definitely not 4.5mm thick. They also aren't 14.5mm thick, so I don't think that was just leaving off a 1. I just took a digital caliper to my '68 1675 and it's 12.61mm, caseback to crystal, not including the cyclops. I figure there will be some variation, depending on exactly what crystal is installed, and how it is seated, along with case polishing variations, though I wouldn't expect the thickness of the case to change much with polishing. *shrug* The 1675 does sit very flat to the wrist, and wears much thinner than it actually is. I can usually wear my GMT under properly fitted shirt cuffs, so I find it highly appropriate for suit wear, unlike my pre-moon Speedy.
Indeed. I took the measurements from a VRF thread and didnt put too much into it.

I stand by my other comments though.

Found this from a post here on TRF. Hopefully more accurate.

Quote:
bottom to glass (w/o cyclop)
- GMT Master (16750) Plexi - 1,30 cm
- GMT Master II (16760) - 1,28 cm
- GMT Master (16700) - 1,18 cm
furhter datas:
- GMT Master II (16710) - 1,20 cm
- GMT Master (1675) Plexi - 1,30 cm
- GMT Master (1675 thin case) Plexi - 1,27 cm
- GMT Master (6542) Plexi - 1,27 cm
to compare
- Submariner Date (16610) - 1,28 cm
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Old 3 August 2017, 08:45 PM   #5
chessebj
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The rest of your comment is spot on, as far as I'm concerned.
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Old 4 August 2017, 02:10 AM   #6
Tom1675
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You've got to try them on... the cases are all about the same as you can see and we've all got different wrists. The comment about the rivet and folded sitting lighter is true, and should be something you try out.
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Old 4 August 2017, 03:00 AM   #7
Swiss Mad!
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Hi

The link below may not give you everything you need to know, but if you are new to vintage GMT's this may help you with all the different model numbers and year of manufacture etc.

Regards

http://www.gmtmasterhistory.com/gmt-..._ref_1675.html

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Old 4 August 2017, 03:49 AM   #8
T0m0ya_0kazak1
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Hello,

Wow thanks everyone. I have read gmtmasterhistory many times, it is a great starting point. I was able to try on a friend's el cornino at one point and it fit amazingly well. Unfortunately there are not too many vintage dealers where I live to try these on. Does anyone have any info on case diameters of the 1675, 16750, 16700 and the 16710?


Thanks
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Old 4 August 2017, 04:25 AM   #9
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Quote:
Originally Posted by T0m0ya_0kazak1 View Post
Hello,

Wow thanks everyone. I have read gmtmasterhistory many times, it is a great starting point. I was able to try on a friend's el cornino at one point and it fit amazingly well. Unfortunately there are not too many vintage dealers where I live to try these on. Does anyone have any info on case diameters of the 1675, 16750, 16700 and the 16710?


Thanks
They are all 40mm.
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Old 4 August 2017, 04:44 AM   #10
thomaspp
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1675 for the win :)
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Old 4 August 2017, 05:06 AM   #11
chessebj
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1675 for the win :)
Well, let's be honest: if this 1675 hadn't been my father's, I would trade it for a 6542. ;)
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Old 4 August 2017, 05:07 AM   #12
thomaspp
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Well, let's be honest: if this 1675 hadn't been my father's, I would trade it for a 6542. ;)
Lol. 6542 are unwearable.
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Old 4 August 2017, 05:15 AM   #13
chessebj
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Lol. 6542 are unwearable.
But not unsellable!
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Old 4 August 2017, 05:49 AM   #14
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Lol. 6542 are unwearable.

???

I love to wear both of my 6542. One with metal insert and the other one with bakelite.....
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Old 4 August 2017, 05:56 AM   #15
chessebj
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???

I love to wear both of my 6542. One with metal insert and the other one with bakelite.....
I think it was a reference to how fragile the Bakelite bezels are.
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Old 4 August 2017, 05:58 AM   #16
thomaspp
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???



I love to wear both of my 6542. One with metal insert and the other one with bakelite.....


Bakelite just so damn delicate. Enjoy my friend!!


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Old 4 August 2017, 06:11 AM   #17
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Thank you Thomas. 6542 rules..... :-))

Here my all day rocker.......




...and here we have something special. One of the very rare bakelites (1st series) with absolutely no cracks, damages. 100% flawless. I even wear it, of course carefully......



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Old 4 August 2017, 06:15 AM   #18
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Sorry for off topic.....
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Old 4 August 2017, 06:23 AM   #19
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Sorry for off topic.....
Don't think anyone will fault you for that with those lovely pictures!! That Bakelite bezel does look amazing and I agree it's something special but I really love the look of that super fat font aluminum on the 6542. It just looks great and is much more wearable I imagine. Thanks for posting.
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Old 5 August 2017, 12:59 AM   #20
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Thank you
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Old 5 August 2017, 03:09 AM   #21
Tom1675
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Quote:
Originally Posted by rolstaff View Post
Thank you Thomas. 6542 rules..... :-))

Here my all day rocker.......




...and here we have something special. One of the very rare bakelites (1st series) with absolutely no cracks, damages. 100% flawless. I even wear it, of course carefully......



Love the blue in your bakelite! Usually it will become darker over time, I haven't seen that color.

And to be clear, pics like that are NEVER off topic! Thanks for sharing!
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Old 5 August 2017, 03:35 AM   #22
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Thank you Tom. It´s one of the early bakelites, probably 1st generation. Those had this colours, but they are very very rare. I never have seen before such one in flawless condition, with no damages.....
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Old 5 August 2017, 03:39 AM   #23
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Hope a little bit more off topic is allowed.....:-))
I love this three-dimensional look.






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