Radium dial watch khols9/11/2023 ![]() ![]() Characteristic for this era is the so-called ‘Pie-Pan’ dial that looks like an upside-down pie-pan (a concentric ring that slopes down from the flat centre). ![]() 1556 movement.The 18xx Day-Date was produced with a wide variety of dial colors and configurations. The risk from old watches containing radium appears to have been largely forgotten today. Ambient dose 24 equivalent rates have been measured for fifteen pocket watches giving results of up to 30 µSv 25 h-1 at a distance of 2cm taken with a. Estimates of the activity of (226)Ra in the watches ranged from 0.063 to 1.063 Ci (2.31 to 39.31 kBq) for pocket watches and from 0.013 to 0.875 Ci (0.46 to 32.38 kBq) for wrist watches. 1803A new era dawned for the Day-Date when the earliest references (65xx & 66xx) were replaced by the 18xx series in 1959, which contained the cal. 23 This study re-examines the risk to health from radium (226Ra) dial watches. With exception of the most modern executions, the Day-Date comes exclusively in a 36mm case. Earlier dosimetric studies (1950-1990) attempted to correlate the magnitude of biological effects (e.g., increased cancer incidence) with variations in radium uptake. And to top it off, it was only available in gold or platinum! Rolex also designed a new three-link bracelet, known as the ‘President,’ to pair with this special watch. In the 1920s, painters in the radium watch dial industry frequently tipped their brushes with their tongues resulting in the ingestion of radium-226 and/or radium-228. The Day-Date was the first waterproof self-winding chronometer certified wristwatch with a day and date function. Rolex Day-DateIn 1956, Rolex introduced one the most iconic watches ever made: the Day-Date. The Radium Girls were female factory workers who contracted radiation poisoning from painting radium dials watch dials and hands with self-luminous paint. ![]()
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