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Hawk99 · 23 January 2010, 03:32 AM

A friend has a beautiful 1665 Rail, which he treats like a hammer and drives me nuts

, but it continues to work regardless. Anyway I was checking it out last night and noticed that unlike my 1680 which says SWISS-T<25 , his has the TSWISST<25.
Are these two variations discribing the same thing (amount of tritium etc...) or is there a difference in the contents of tritium between the two dials?
Thanks,

CKLinLA · 23 January 2010, 03:58 AM

Interesting Q, I never realized that there was a "T SWISS T <25" variation before your post.

louie · 23 January 2010, 04:07 AM

i think so its the earlier dial has the T swiss T,and the T swiss <25 T on the later dials...i'll let our fellow vintage gurus answer to your question.

PS.Hi CKLinLA is that a T swiss <25 T dial on your 1655 in your avatar?

Hawk99 · 23 January 2010, 11:07 AM

Anyone?

CaveDiver · 23 January 2010, 11:27 AM

It appears rail SD are the only ones marked like this. There is no indication that the tritium is a different.
See: http://doubleredseadweller.com/rail_white_sd.htm

finance21 · 23 January 2010, 01:20 PM

T SWISS T= Earlier versions
<25T=Dials from mid 70's on

By law I think they had to limit the amount of tritium emitted to less than some measurement of tritium. 25 represents that measurement. I am unsure exactly why they changed the front. Perhaps a different dial manufacturer?

Someone please correct me if I am wrong.

mike · 23 January 2010, 09:40 PM

http://www.rolexforums.com/showthread.php?t=31836

http://www.oysterinfo.de/en/detailin...asse/index.php

Hawk99 · 24 January 2010, 03:15 AM

Before I posted the question, all I could find was that it was simply just a different style of writing, but indicated the same thing as other dials, such as my 1680.
What I found confusing is that it was ONLY on the Rail SD's, which I guess will be another Rolex dial oddity.

23 January 2010, 03:32 AM	#1
Hawk99 "TRF" Member Join Date: Oct 2009 Location: BC Posts: 388	T Swiss T < 25 question?....... A friend has a beautiful 1665 Rail, which he treats like a hammer and drives me nuts , but it continues to work regardless. Anyway I was checking it out last night and noticed that unlike my 1680 which says SWISS-T<25 , his has the TSWISST<25. Are these two variations discribing the same thing (amount of tritium etc...) or is there a difference in the contents of tritium between the two dials? Thanks,

23 January 2010, 03:58 AM	#2
CKLinLA "TRF" Member Join Date: Mar 2009 Real Name: KL Location: ... travelling Watch: Explorer II Black Posts: 1,447	Interesting Q, I never realized that there was a "T SWISS T <25" variation before your post. __________________ Explorer II 1655; Day Date 1803; Submariner 14060; Deepsea Sea-Dweller 116660; 5-Digit Datejusts; Perpetual Date 1500 and 15000; Pelagos FXD M25707B; Omega Dynamic 'Targa Florio' 5291.51.07; 'Good Planet' GMT 232.30.44.22.03.001; Planet Ocean 215.30.40.20.03.002; Zenith Chronomaster Original 03.3200.3600/22.M3200.

23 January 2010, 04:07 AM	#3
louie "TRF" Member Join Date: May 2008 Real Name: Lewis Location: Earth Watch: The Beast Posts: 1,352	i think so its the earlier dial has the T swiss T,and the T swiss <25 T on the later dials...i'll let our fellow vintage gurus answer to your question. PS.Hi CKLinLA is that a T swiss <25 T dial on your 1655 in your avatar? __________________ " I THINK PERFECTION IS UGLY. SOMEWHERE IN THE THINGS HUMANS MAKE, I WANT TO SEE SCARS, FAILURE, DISORDER AND DISTORTION" - YOHJI YAMAMOTO

24 January 2010, 03:15 AM	#8
Hawk99 "TRF" Member Join Date: Oct 2009 Location: BC Posts: 388	From my own research....... Before I posted the question, all I could find was that it was simply just a different style of writing, but indicated the same thing as other dials, such as my 1680. What I found confusing is that it was ONLY on the Rail SD's, which I guess will be another Rolex dial oddity.

23 January 2010, 11:07 AM	#4
Hawk99 "TRF" Member Join Date: Oct 2009 Location: BC Posts: 388	Anyone?

23 January 2010, 11:27 AM	#5
CaveDiver "TRF" Member Join Date: Dec 2009 Location: Dallas Posts: 1,075	It appears rail SD are the only ones marked like this. There is no indication that the tritium is a different. See: http://doubleredseadweller.com/rail_white_sd.htm

23 January 2010, 01:20 PM	#6
finance21 2024 Pledge Member Join Date: Dec 2006 Location: U.S.A Posts: 362	T SWISS T= Earlier versions <25T=Dials from mid 70's on By law I think they had to limit the amount of tritium emitted to less than some measurement of tritium. 25 represents that measurement. I am unsure exactly why they changed the front. Perhaps a different dial manufacturer? Someone please correct me if I am wrong.

23 January 2010, 09:40 PM	#7
mike "TRF" Member Join Date: Jul 2005 Posts: 22,683	http://www.rolexforums.com/showthread.php?t=31836 http://www.oysterinfo.de/en/detailin...asse/index.php

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