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philippstahl
.User deleted
Thanks to Bas.nl for the scientific use of a Geiger meter to date a dial correctly.
"I have measured with my Geiger counter more than 10 Rolex watches with a underline.
All of them had swiss on the dial, and there was no radiation!
When you measured a normal swiss dial (no underline) they are radioactive. They give a radiation of 1 til 30 microSw/h "
From the earlier results we measure together you see the difference of radiation results, before & after radium used and tritium came...
5512...
6542...
6538...
To your studie on the messuared 10 x underlines you have had, gives me the decisive...
It all makes sense to me, finally i can agree on the definitaion of underline stands for tritium.
The Typo difference and print colour that have been used on underline dials...& using White Swiss, Gold swiss etc...
an underline on your dial stands for Tritium, and was used around '62-'63!!.... simpel :- )
Rgrds.P
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good job philipp...
thanks for your info.
regards
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philippstahl .
User deleted
Thanks!
If been triggered quite some time on he underline issue.
I'm glad i can let it go now every time i look at one ;-)
Best P.. -
philippstahl .
User deleted
In my research there are for instance 2 Big Crowns ans 6542, all Underline with silver print and most likely put in around'62 and got their underline, Crown is also slightly different, thinner...more 5512 
Andrea's 6538...
6542...
Rgrds.P. -
jatucka .
User deleted
P, as i wrote yesterday on VRF to Bas.nl and to buddy Orchi, this could be a good input in the study of the Underlines.
maybe all the Underlined have Tritium and not Rarium in the dial.
maybe before the use of "T<25" print they used to print the Underline.
so all the Underlined in the very old reference could be very early Service dials, or just dials in which Rolex changed the Radium with the Tritium before to sell them.
it can make sense.
just two things.
1
why to use Underline + T SWISS T in this dial ?
2
concerning some very old reference with the Underline.
is it possible that we payied lot of money for some early Service dials ??
cheers.. -
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Good afternoon,
regarding the 6542 radioactivity, have you tried to measure it without bezel?
Probably the emission it is not caused by dial, but by bezel!
Best regards,
Claudio
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philippstahl .
User deleted
@ Roberto,
Your dial is from '63, has a underline that says that there is no radium but tritium used on the dial... imho no exception
This is more an exception i give you to think about ;- )
7922 big crown with gilt swiss underline silver text...
Another question that came up, does T mean that tritium is used?
Here a close up from a 6200 small logo with SWISS T print:
@ Claudio
We have tried the radium 6542 dials only, as also other references like 6202 6536 5508 etc..
All dials with radium are at least 50-100 times higher in radiation then tritium dials...
You also see it in blacklight:
radiation measured from difference sites...
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jatucka .
User deleted
CITAZIONE (philippstahl @ 8/2/2009, 19:15)Your dial is from '63, has a underline that says that there is no radium but tritium used on the dial... imho no exception
well, actually i think that my dial is from '64.
ALL the Tudor T SWISS T that i've seen/had were between '64 and '66
we can be sure about that.
you can see my topic on this dial on the Peppo's forum.CITAZIONE (philippstahl @ 8/2/2009, 19:15)Another question that came up, does T mean that tritium is used?
Here a close up from a 6200 small logo with SWISS T print:
we were just talking about that with Peppo.
we think that the 6200 small logo dial could be an early service dial
cheers.
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philippstahl .
User deleted
Tom's logic answer to your question:
Perhaps the dials were already starting to be printed with the "T" but still marked for a short while with the underline after initial printing as per prior procedure. Then they realized that they no longer needed the added underline to designate that the dial was conforming to international radioactivity standards and stopped bothering with that additional step.
Just a thought...
Best,
T.
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officinementali .
User deleted
CITAZIONE (philippstahl @ 8/2/2009, 19:15)@ Roberto,
Your dial is from '63, has a underline that says that there is no radium but tritium used on the dial... imho no exception
This is more an exception i give you to think about ;- )
7922 big crown with gilt swiss underline silver text...
Another question that came up, does T mean that tritium is used?
Here a close up from a 6200 small logo with SWISS T print:
@ Claudio
robè per me siamo in 2 a dire che è del 63, anche secondo me è del 63. te lo dissi ieri. poi tutto può essere
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jatucka .
User deleted
CITAZIONE (philippstahl @ 8/2/2009, 19:59)Tom's logic answer to your question:
Perhaps the dials were already starting to be printed with the "T" but still marked for a short while with the underline after initial printing as per prior procedure. Then they realized that they no longer needed the added underline to designate that the dial was conforming to international radioactivity standards and stopped bothering with that additional step.
Just a thought...
Best,
T.
yes, it makes senseCITAZIONE (officinementali @ 8/2/2009, 20:41)robè per me siamo in 2 a dire che è del 63, anche secondo me è del 63. te lo dissi ieri.
poi tutto può essere
Maurì, quanti ne hai visti 7928 del '63 con la T SWISS T.
sempre visti fra il '64 ed il '66
e di questi ne ho visti/avuti davvero tanti.
cheers.
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Ottimo lavoro,grande intuizione P. . -
philippstahl .
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Thanks Stefano 
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An underline on your dial stands for Tritium! |
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