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Old 31 July 2016, 03:19 PM   #1
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Join Date: Apr 2008
Real Name: jP
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Rolex crystal numbers from the R. 20 Catalogue

Below you will find tables for Rolex crystal numbers taken directly from their R. 20 Catalogue. It contains both tropic (non cyclopes crystal) and cyclope crystal numbers.

Each column contains a number at the top which is the crystal number. Directly below the crystal number is a listing for the models that use the crystal.

The first two yellow pages are for tropic crystals, the next two white pages are for cyclope crystals and the last page is for replacement tropic crystals that work as replacements for cyclope crystals. As an example, look at the the 116 cyclope crystal. A few columns to the right you will see that the tropic 38 is a replacement for this crystal for the 116 cyclope. Now, if you go back and look at the 116 cyclope crystal group, you'll see that that this group includes the GMT 1675 and 1652 and the Explorer II 1655.
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Old 8 August 2016, 08:53 AM   #2
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great information.very interesting
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Old 20 June 2019, 11:55 AM   #3
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This is super helpful and useful Springer. Thank you for sharing.
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