Characteristics of various Rolex dial lume*

Reference material, technical and historic data

Characteristics of various Rolex dial lume*

Postby springer » Mon Jul 23, 2018 11:07 am

Prior – 1953, The early age of Rolex luminous, used on their pocket watches, early oyster cases, bubble backs and radiomir Panerai’s.

1953 – 1956, When Rolex introduced the world their sports / utility / tool watch concept with radium Submariner, TOG, Explorer & GMT Master.

1957 – 1960, When Rolex lowered radiation and chanced dial printing from 1 to 2 colored print and enhanced the lacquer to a more glossy variant.

1960 – 1963, The pre ‘Transitional” period with “Exclamation” mark and due to the starting international regulation, again less radioactive luminous

1963 – 1964, “Transitional” underline of which Rolex switched from Radium to Tritium, delivered dials are “SWISS” signed but laminated with tritium

1964 – 1967, The new generation tritium luminous got added on glossy dials, signing chanced from “SWISS” to “SWISS – T<25” & “T-SWISS-T”

1967 – 1983, The matte dial with tritium luminous got introduced by Rolex. We see tritium signings variations like T SWISS T<25 or
σ T-SWISS-T σ

1983 – 1997, The last era of the tritium dials when the glossy dial surface came back, now the luminous was added in a added white gold surround

1998- 2000, LumiNova was invented in 1993 and patented in 1995; Nemoto & Co. Ltd. was contracted in 1998 to provide LumiNova to Switzerland

2000 – 2008, Super Luminova, a improved version of Luminova, a material that has the same properties as tritium but is not radioactive

2008 – now, Chroma Light, the new blue-ish colored Super Luminova thats been in use since Rolex patented it

* Source: http://rolexpassionreport.com/15606/the ... -luminous/

Additionally, here is another article on various dial lumes found in the Reference Library at rolexforums.com.

https://www.rolexforums.com/showthread.php?t=123465
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