GMT 1675 Dials

[springer]

Below are some photos that I have put together regarding the progression of the GMT 1675 dials from the various eras of production from 1960-1980.

Since I do not have every GMT dial variation in my possession, I relied on the internet for some of the photos which are depicted here.

The gilt (or gold font dials) era for the GMT 1675 began with the original model and continued until it was discontinued around 1966. There were a few variations of the gilt dials with the early ones reading SWISS at the the bottom and the last ones from the gilt era with SWISS - T 25 printed at the bottom. There were also variations with the SWISS dials. There were the early "exclamation point" dials which looked like an exclamation point at the number six marker (see photo G-1 and G-2). There was also another variation where the dial contained an underlined score directly beneath the OFFICIALLY CERTIFIED font and the circa 1964 radial dial with the double marked SWISS identified in the G-rail photo below. The exclamation point dials and the underline scored dials would probably be considered the rarest of the gilt era dials. (There could be some other variations that I have over-looked.) Most of the gilt dials all have a distinct coronet which helps identify them further. Below are photos of the gilt dials identified as G-1 through G-6 and what I believe is the progression of the dials.

The dial marked G-5 or G-6 was the last variation of the gilt dial and the G-4 preceded it. G-1 seems to be the earliest gilt dial and the G-2 and G-3 fell somewhere in between.

After the gilt dials, the printing became white on the GMT dials. Each era for the various white dials found on the GMTs is easy to identify by the coronet printed on the dial. There are also luminova/super luminova service dials that contain a very distinct dial coronet and are marked SWISS - T 25 and or SWISS at the bottom (the dial coronet is the same on both dials).

The white dials are identified below as W-1 through W-5 along with a photo of the GMT 1675 service dial. The dial marked W-3 is what is commonly referred to as the "radial dial" made for one or two years during the mid 1970's. Dial W-1 was used during the late 1960s thru 1971, W-2 followed next for a few years, then W-3 for a couple years and the same for W-4 and W-5. It appears that during the 1970s, the dial was changed every two or three years. I do not want to place exact dates on the production era for each dial variation but instead prefer to show the progression of the dials.

[frequentflyer]

Excellent post, thanks

[nycpassat]

Great informative post. I have a question regarding the so called W-3 dial. Why it is called the rail dial?

Thanks

[springer]

Originally Posted by nycpassat

Great informative post. I have a question regarding the so called W-3 dial. Why it is called the rail dial?

Thanks

I can't answer that for you but I can explain the difference when compared to the other white dials.

On the radial dial (incorrectly typed as rail dial), if you look at the second marks, they are much longer than those found on the other dials. Additionally, there is a larger gap between the circular plots and the second marks.

[Beaumont Miller II]

Originally Posted by springer

I can't answer that for you but I can explain the difference when compared to the other white dials.

On the rail dial, if you look at the second marks, they are much longer than those found on the other dials. Additionally, there is a larger gap between the circular plots and the second marks.

RADIAL...not RAIL.

Radial dial Gmt is often referred to as a the MK III dial and is often seen around the low 5.0 mil circa 1977.

The Rail Dial is seen in some rare 1655's and 1665's and is when the "C" in Chronometer is directly over the "C" in Certified. These dial were made by the Stern Company.

[Beef]

Great post! Ought to be a sticky! Thanks, Springer!

[TempoKing]

Originally Posted by Beef

Great post! Ought to be a sticky! Thanks, Springer!

x2

[springer]

Originally Posted by Beaumont Miller II

RADIAL...not RAIL.

Radial dial Gmt is often referred to as a the MK III dial and is often seen around the low 5.0 mil circa 1977.

The Rail Dial is seen in some rare 1655's and 1665's and is when the "C" in Chronometer is directly over the "C" in Certified. These dial were made by the Stern Company.

I meant radial, not rail. Sorry for the confusion.

[nycpassat]

Originally Posted by springer

I meant radial, not rail. Sorry for the confusion.

no worries, I thought so too just making sure.

[Frosty]

Originally Posted by springer

I can't answer that for you but I can explain the difference when compared to the other white dials.

On the radial dial (incorrectly typed as rail dial), if you look at the second marks, they are much longer than those found on the other dials. Additionally, there is a larger gap between the circular plots and the second marks.

Thank you, Springer! I have often been told I had a "Radial Dial" and was just not sure about the lines. To my untrained eyes, the lines all looked similar.

Your comments on the plots on the other hand were obvious, so now I understand, it is a "Radial Dial".

[daniel_pdq]

Hi John,

Being wearing my GMT for over 30 years and never knew so much. Thank you.

My s/n ~5008 and had it serviced only at RSC. Might had the dial replaced years back. Can you tell me which dial I have.

Again, many thanks for imparting your knowledge.

Daniel

[springer]

Originally Posted by daniel_pdq

Hi John,

Being wearing my GMT for over 30 years and never knew so much. Thank you.

My s/n ~5008 and had it serviced only at RSC. Might had the dial replaced years back. Can you tell me which dial I have.

Again, many thanks for imparting your knowledge.

Daniel

I believe it is a Mark V. The photo is not very sharp for my eyes!

[Sky21]

Originally Posted by daniel_pdq

Hi John,

Being wearing my GMT for over 30 years and never knew so much. Thank you.

My s/n ~5008 and had it serviced only at RSC. Might had the dial replaced years back. Can you tell me which dial I have.

Again, many thanks for imparting your knowledge.

Daniel

Hi Daniel, your picture is quite blurry as Springer stated above, but I also believe that you have a Mk 5 Beyeler dial on your GMT. It looks as if the dial is in very nice condition as well as the rest of your watch.

[laphroaig007]

I thought the "rail dial" referred to the two lines for
Superlative chronometer
Officially certified
Where the gap betweens both words on each lines were perfectly align in the middle.

See for more about "rail dials"
>>> http://www.doubleredseadweller.com/rail_white_sd.htm on the excellent DRSD website
>>> http://www.newturfers.com/vb/showthread.php?t=2256 on TRF

;-)

[Beaumont Miller II]

Originally Posted by laphroaig007

I thought the "rail dial" referred to the two lines for
Superlative chronometer
Officially certified
Where the gap betweens both words on each lines were perfectly align in the middle.

See for more about "rail dials"
>>> http://www.doubleredseadweller.com/rail_white_sd.htm on the excellent DRSD website
>>> http://www.newturfers.com/vb/showthread.php?t=2256 on TRF

;-)

Post number 5 is a pretty good explanation.

[springer]

Originally Posted by laphroaig007

I thought the "rail dial" referred to the two lines for
Superlative chronometer
Officially certified
Where the gap betweens both words on each lines were perfectly align in the middle.

See for more about "rail dials"
>>> http://www.doubleredseadweller.com/rail_white_sd.htm on the excellent DRSD website
>>> http://www.newturfers.com/vb/showthread.php?t=2256 on TRF

;-)

Sorry for the confusion. I did mean radial and typed rail instead.

[nuno116600]

Originally Posted by springer

Sorry for the confusion. I did mean radial and typed rail instead.

Can any one tell me what this dial mark is?
The watch is late 70’s




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[springer]

[QUOTE=nuno116600;8225759]

Can any one tell me what this dial mark is?
The watch is late 70’s
_______________________________________________

The dial is a Mark V (a).

[The Argonaut]

[QUOTE=springer;8225876]

Originally Posted by nuno116600

Can any one tell me what this dial mark is?
The watch is late 70’s
_______________________________________________

The dial is a Mark V (a).

Damn. That’s a beautiful looking piece. The dial and crystal look immaculate.


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[nuno116600]

[QUOTE=springer;8225876]

Originally Posted by nuno116600

Can any one tell me what this dial mark is?
The watch is late 70’s
_______________________________________________

The dial is a Mark V (a).

Thank you for your answer.
I bought it because it looked so nice with out checking first. Thankfully it wasn’t a replacement dial. The hands seem to be around the same age also


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[ghostface]

[QUOTE=springer;8225876]

Originally Posted by nuno116600

Can any one tell me what this dial mark is?
The watch is late 70’s
_______________________________________________

The dial is a Mark V (a).

I believe this is actually 5B, since the O's are circular as opposed to ovoid

[HL65]

Great post John...Very informative!

[Rickster]

Great post thanks for the details

[anilzat]

nice post

[-Accountant-]

Great post for dummies like!!!

Just use your photos to spot out a MK1 dial from a MK3 case newly advertised else where......very useful!

[springer]

Originally Posted by -Accountant-

Great post for dummies like!!!

Just use your photos to spot out a MK1 dial from a MK3 case newly advertised else where......very useful!

You lost me at the MK3 case. I guess I'm a dummy.

[-Accountant-]

Originally Posted by springer

You lost me at the MK3 case. I guess I'm a dummy.

Oh sorry typo I meant mk4 instead of mk3

[1675-David]

excellent post, thanks for doing this

[TimeToGo]

Excellent John.

Here is an earlier Luminova variance to the 1675 "Swiss" Service Dial you posted. Picture came from one of our Sellers on the Forum. This one has the "Swiss - T<25" on the dial:
.

[springer]

Originally Posted by TimeToGo

Excellent John.

Here is an earlier Luminova variance to the 1675 "Swiss" Service Dial you posted. Picture came from one of our Sellers on the Forum. This one has the "Swiss - T<25" on the dial:
.

Thanks Norm.

The GMT 1675 service tritium dial and the service luminova dial are both marked SWISS - T<25 and look identical except for the plot/hands material. There is also the service dial with super luminova material marked SWISS at the bottom. Photos of the service dial with tritium and super luminova are in my first post.