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zerojanvier · 5 February 2008, 06:00 AM

Hi,

again my old Sub from 1956 ...

... somebody told me, the dial might have been changed as the older ones just were marked "SWISS" and mine has "SWISS - T<25" ... and the hands have different colour than the dial.

a/ is this dial original or newer?

b/ what does it mean "T < 25"?

Thanks

Zerojanvier.

SPACE-DWELLER · 5 February 2008, 06:07 AM

T<25 means that is has a Tritium dial that emits less the 25 milicure of radio-active radiation.

Here is an article about luminous materials.

And you can read about the various marking in this overview.

Since you're watch is from before 1960, the dial showing T<25 (1960 onwards) must have been added later.

zerojanvier · 5 February 2008, 06:29 AM

Thanks !!!

I really love this forum - nice people and quick and good replies !!!

Thank you.

mike · 5 February 2008, 06:34 AM

Either way congrats on a great reference.

Check out the dial forum here and compare to other examples. Click on Submariner then 6538,

http://vintagerolexforum.info/vrf/dials.html

5 February 2008, 06:00 AM	#1
zerojanvier Member Join Date: Jan 2008 Location: Hamburg, Germany Watch: SS Daytona 116520 Posts: 36	Sub 6538 - Dial changed ? Hi, again my old Sub from 1956 ... ... somebody told me, the dial might have been changed as the older ones just were marked "SWISS" and mine has "SWISS - T<25" ... and the hands have different colour than the dial. a/ is this dial original or newer? b/ what does it mean "T < 25"? Thanks Zerojanvier. Attached Images

5 February 2008, 06:07 AM	#2
SPACE-DWELLER "TRF" Member Join Date: Apr 2007 Real Name: Bo Location: Denmark Watch: Rolex, of course! Posts: 22,436	T<25 means that is has a Tritium dial that emits less the 25 milicure of radio-active radiation. Here is an article about luminous materials. And you can read about the various marking in this overview. Since you're watch is from before 1960, the dial showing T<25 (1960 onwards) must have been added later. __________________ With kind regards, Bo LocTite 221: The Taming Of The Screw...

5 February 2008, 06:29 AM	#3
zerojanvier Member Join Date: Jan 2008 Location: Hamburg, Germany Watch: SS Daytona 116520 Posts: 36	Thanks !!! I really love this forum - nice people and quick and good replies !!! Thank you.

5 February 2008, 06:34 AM	#4
mike "TRF" Member Join Date: Jul 2005 Posts: 22,683	Either way congrats on a great reference. Check out the dial forum here and compare to other examples. Click on Submariner then 6538, http://vintagerolexforum.info/vrf/dials.html

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