Waltham odd rr watch dials

Thread: Waltham odd rr watch dials

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  1. #1
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    Waltham odd rr watch dials

    Both of these are top grade rr approved models, except originally ordered with nonconforming dials. A negative black and white. Other had a lot of active radium as shown by original irradiated purple glass.
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    Last edited by artb; February 1st, 2010 at 15:58.

  2. #2
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    Re: Waltham odd rr watch dials

    Nice watches!
    Can you please explain about the irradiated glass?
    In the past, some Glass manufacturers added Uranium to the glass (Crystalglass) to achieve a green tint (I think it was green).
    The black dialled one looks almost military in appearance.

  3. #3
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    Re: Waltham odd rr watch dials

    Quote Originally Posted by Janne View Post
    Nice watches!
    Can you please explain about the irradiated glass?
    In the past, some Glass manufacturers added Uranium to the glass (Crystalglass) to achieve a green tint (I think it was green).
    The black dialled one looks almost military in appearance.
    I believe this link will tell you what you need to know http://www.glassencyclopedia.com/irradiatedglass.html

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  5. #4
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    Re: Waltham odd rr watch dials

    Pretty nice looking examples~Cheers!

  6. #5
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    Re: Waltham odd rr watch dials

    Appreciate the reference about glass color change with radiation. Effects on watch crystals not generally noticeable maybe because of different glass mixes used, replacements, smaller radium amounts. Never saw another one. I do not own this one. It belongs to a retired phd chemist who is older than me and also has not seen another.
    Last edited by artb; February 3rd, 2010 at 14:05. Reason: correct

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