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ROLEXROLEXROLEXROLEXROLEXROLEX
ROLEXROLEXROLEXROLEXROLEXROLEX
24 September 2015, 11:58 AM
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#1 |
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"TRF" Member
Join Date: Sep 2015
Location: Lima
Posts: 34
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OT swiss TO on Oyster Perpetual date 6517
Hello
Does someone know why some Rolex as on the bottom (at 6 o clock) OT swiss TO and not like usually T swiss T  Thanks |
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24 September 2015, 12:08 PM
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#2 |
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Banned
Join Date: Oct 2011
Real Name: Jeff
Location: Home!
Posts: 1,259
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It denotes gold markers. The symbol is the Greek letter sigma.
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24 September 2015, 12:10 PM
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#3 |
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"TRF" Member
Join Date: Sep 2009
Real Name: MDangerSteel
Location: Canada
Watch: Vintage Rolex
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That's what is referred to as The Sigma Dial.T stands for Tritium andO stands for Oro ( Gold) . The indices, or the sticks are made out of Gold.
Cool vintage 
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 Card Carrying Member of the Global Association of Retro-Grouch-CurmudgeonsProbability of survival is inversely proportional to the angle of arrival---Capt. Rage Don't believe anything in aviation, 'till V1---Mitch Danger Steel |
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24 September 2015, 12:11 PM
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#4 |
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"TRF" Member
Join Date: Apr 2014
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Rolex 116710LN To whom much is given, much is tested. |
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24 September 2015, 01:36 PM
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#5 |
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TRF Moderator & 2024 DATE-JUST41 Patron
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Real Name: Larry
Location: Mojave Desert
Watch: GMT's
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During the transition to all gold indices Rolex made new markings..
oT Swiss To = gold indices -T Swiss T- = steel indices
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24 September 2015, 01:53 PM
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#6 |
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"TRF" Member
Join Date: Apr 2014
Location: Salem, OR
Posts: 5,199
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Sigma.
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24 September 2015, 11:00 PM
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#7 |
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"TRF" Member
Join Date: Sep 2015
Location: Lima
Posts: 34
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Thanks a lot for these response it's now clear to me
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