{"id":2923,"date":"2020-09-25T15:16:34","date_gmt":"2020-09-25T13:16:34","guid":{"rendered":"https:\/\/www.oysterinfo.de\/?page_id=2923"},"modified":"2020-10-13T11:49:47","modified_gmt":"2020-10-13T09:49:47","slug":"luminous-material","status":"publish","type":"page","link":"https:\/\/www.oysterinfo.de\/en\/luminous-material\/","title":{"rendered":"Luminous Material"},"content":{"rendered":"

Luminous Material<\/h1>\n

For vintage freaks, the “right” luminous material for a watch is a decisive buying criterion. Over the years, Rolex, and also other manufacturers, used various types of luminous material on the dials, the hands, and the luminous dots of the bezel. It is important for a collector that the illuminant used corresponds to the year of the watch and that, if possible, the same luminous material is available for the dial, hands and bezel – and, if possible, still in the same color. Since the previously used luminous material ages severely (i.e., is yellowed and crumbly), the hands are exchanged during a repair at Rolex and often the dial is replaced, too. Meanwhile, there is even a statement from Rolex that the dial and hands coated with tritium must be replaced and disposed of because of the health hazards of watchmakers. This instruction applies to Rolex itself as well as to all concessionaires who carry out repairs. The risk is therefore very big of getting the watch back with new dial and hands if a repair is done.<\/span><\/span><\/p>\n

In preserving the value of a vintage watch, this is not beneficial to the existing value. Anyone prefers to decide for himself whether to send the watch to Rolex or a concessionaire with a note like “do not change dial, pointer and bezel” <\/span><\/span>(with the risk that a repair is then rejected) or whether he will accept the exchange. It depends on the use of the watch (tool watch or collector’s item). If Rolex rejects a repair, if a dial and pointer can not be exchanged, the only alternative is to go to a small watchmaker who does not have to follow any instructions from Rolex.<\/span><\/span><\/p>\n

By the end of the 1950s, radioactive and self-luminous radium was used. It was then replaced by tritium, which was weaker in radioactivity. From 1998 onwards, Superluminova, which is non-radioactive, was introduced.<\/span><\/span><\/p>\n

The advantage of the early phosphors was their self-luminous capability, but coupled with this was the disadvantage that this declined rapidly after a few years due to radioactive decay. Today there are only a few watches, which were manufactured late, which still glow even dimly. Most watches do not light up. Luminova or Superluminova always shines, but it must be charged before it glows by a light source. This luminosity diminishes over time in the dark.<\/span><\/span><\/p>\n

On the basis of the dial printing, it is easy to recognize which illuminant was applied to the dial:<\/span><\/span><\/p>\n

<\/div>
<\/th><\/th><\/th><\/tr><\/thead>
SWISS <\/td><\/td>Leuchtmasse Radium
Anwendung bis ca. 1960
radioaktiv

luminous material Radium
used until 1960
radiactive <\/td><\/tr>
SWISS - T < 25 <\/td><\/td>Leuchtmasse Tritium
Anwendung ca. 1960 bis 1998
radioaktiv, Strahlung geringer als 925 MBq (25 mCi)

luminous material Tritium
used from 1960 until 1998
radioactive, radioactivity less than 925 MBq (25 mCi) <\/td><\/tr>
T SWISS T <\/td><\/td>Leuchtmasse Tritium
Anwendung ca. 1960 bis 1998
radioaktiv, Strahlung geringer als 277 MBq (7,5 mCi)

luminous material Tritium
used from 1960 until 1998
radioactive, radioactivity less than 277 MBq (7,5 mCi) <\/td><\/tr>
SWISS <\/td><\/td>Leuchtmasse Superluminova
Anwendung 1998 bis 2000
nicht radioaktiv

luminous material Superluminova
used from 1998 until 2000
not radioactive <\/td><\/tr>
SWISS MADE <\/td><\/td>Leuchtmasse Superluminova
Anwendung ab 2000
nicht radioaktiv

luminous material Superluminova
used from 2000
not radioactive <\/td><\/tr>
SWISS MADE <\/td><\/td>Leuchtmasse Chromalight (blau)
Anwendung ab ca. 2008 (Deepsea) einflie\u00dfend
nicht radioaktiv

luminous material Chromalight (blue)
used from approx. 2008 (introduced with Deepsea)
not radioactive <\/td><\/tr><\/tbody><\/table><\/div>WordPress Tables Plugin<\/a>\n

 <\/p>\n

There are two further printings on dials that are not related to the luminous material but to the material of the hour indicators:<\/p>\n

<\/div>
<\/th><\/th><\/th><\/tr><\/thead>
o SWISS o
o SWISS MADE o <\/td>		<\/td>Indexe aus Gold

golden hour indicators <\/td><\/tr>
- T SWISS T - <\/td><\/td>Indexe aus Stahl
Leuchtmasse Tritium
Anwendung bis 1998
radioaktiv

steel hour indicators
luminous material Tritium
used from 1998
radioactive <\/td><\/tr><\/tbody><\/table><\/div>WordPress Tables Plugin<\/a>\n

 <\/p>\n

Cover picture: Rolex<\/p>\n","protected":false},"excerpt":{"rendered":"

Luminous Material For vintage freaks, the “right” luminous material for a watch is a decisive buying criterion. Over the years, Rolex, and also other manufacturers, used various types of luminous material on the dials, the hands, and the luminous dots […]<\/p>\n","protected":false},"author":1,"featured_media":2715,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"footnotes":""},"yoast_head":"\nLuminous Material – oysterinfo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.oysterinfo.de\/en\/luminous-material\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Luminous Material – oysterinfo\" \/>\n<meta property=\"og:description\" content=\"Luminous Material For vintage freaks, the “right” luminous material for a watch is a decisive buying criterion. 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