Vintage Watch Radiation Alert Guide

clemens m · 2024-09-13T07:13:20Z

Collector clemens m shares a vital safety warning about handling vintage radium-lumed Universal Genève Polerouter watches and the risks of radium dust. Learn about radiation hazards and safe storage.

clemens m

WPS member · Horological Meandering forum

22 replies2692 views3 photos

In a compelling post, collector clemens m highlights the critical importance of caution when acquiring and handling vintage radium-lumed watches. His personal experience with a recent Universal Genève Polerouter acquisition underscores the potential hazards of loose radium dust and the necessity of proper handling, even for seemingly sealed packages. This discussion serves as a vital reminder for all enthusiasts of pre-1960s timepieces to prioritize safety and awareness.

It is always good to have a Geiger counter at hand when one is messing around with pre-1960s Radium lumed watches. I received my newest watch acquistion from a private seller from eBay and before opening the package I did my standard radiation check and this thing radiated quite a bit even through the packaging material.

I thought WTF and upon closer inspection I realized why - the plastic bag with the watch also contained loose parts of the movement randomly thrown into (it is a restoration project that needs some work) and the plastic bag had holes in it...�� Yummy, who doesn't like the potential hazard of radium dust flying around the house?�� I immediately put the contents in a new bag and voilla - looks much better now:

Now I can store it inside our house without too much headache before I find the time to handle it to my watchmaker. Please keep in mind when you handle Radium-lumed watches: this stuff is DANGEROUS! Inside a sealed watch case I don't see a problem but when you handle a watch with potentially loose Radium debris do your homework and handle with care! Well, you might have asked yourself which watch it is?

Peekaboo - what am I?��

Key Points from the Discussion

Radium's alpha emissions have low penetrating power but high ionization power; however, the primary concern with vintage radium-lumed watches is the buildup of radon, an odorless gas byproduct of radium decay, which can be highly hazardous and cause cancer. It is recommended to store such items in airtight containers and open them outdoors.
While radium-lumed items from the first half of the 20th century may no longer glow, their radioactivity persists, as the radium's half-life is 1,600 years. The decay of the zinc sulfide phosphor, not the radium, causes the loss of luminosity.
Watchmakers dealing with radium dials likely employ masks, gloves, and good airflow. Disposing of radium-contaminated parts is a complex issue due to the material's hazardous nature.
A Geiger counter, even an affordable model, is a valuable tool for detecting radiation from vintage watches, providing a basic safety measure for collectors.
The Universal Genève Polerouter Ref. 20357-2, despite its common issue of a busted rotor axle in its Microrotor movement, remains a desirable vintage piece, especially in all-original condition.
The Universal Genève Polerouter series, including early models like the Ref. 204605-3 with 'Microtor' on the dial, and other Genta-designed cases like the Monodatic Ref. 100101, represent a rich catalog of historically significant and often still affordable designs.

The Discussion

clemens m

Sep 13, 2024

I always wonder how watchmakers deal with it, maybe they use masks and gloves along with good air flow while working on Radium dials but disposing of Radium-contaminated parts is something I guess is not too easy. Inside a watch case with intact crystal and new gaskets I don't give a second thought about Radium although I would not want to put my Radium watches under my pillow either.

clemens m

Sep 13, 2024

It is a Universal Geneve Polerouter Ref. 20357 - 2 Normally I prefer watches with less patina but this example seems to be in all-original condition and the price was just too tempting. Sure, the rotor axle is busted (a common problem with UG Microrotor movements) but my watchmaker can fix the movement and hopefully this black stuff: ... is just loose dirt and debris from the movement which found its way on the dial throug the gap between the chapter ring and the dial. Some Rodico and/or a fine

clemens m

Sep 13, 2024

as it is no more in use today. But older watches and military equipment used it, sometimes in such big amounts that there are serious health concerns, especially when not in a sealed environment. Always take care when handling this old stuff! I'm also excited about the outcome of this "project"...

clemens m

Sep 13, 2024

most of their models are (still) somewhat affordable. They have such a rich back catalogue of amazing designs, many hidden gems still to be discovered although these Genta-designed Polerouters have already arrived in the Mainstream.

montres1

Sep 13, 2024

Mine is a ref. 204605-3 one of the very first series from 1960 with the "Microtor" mentioned on the dial which was removed from the later versions of that same model: Unfortunately the crown is not original. I am also very proud of my Monodatic first generation ref. 100101 from 1951/52 with the same Genta case and the bumper 138C movement:

Ronald Held

Sep 13, 2024

Almost a lifetime ago. What model of Geiger counter is that?

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