Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watches?

Thread: Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watches?

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  1. #1
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    Question Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watches?

    What type of lume did Bulova use on their watches back in 1973? I just purchased 2 "identical" model Bulova automatics that have luminous hands and luminous numbers written out on the dial. Both watches were manufactured between 1972 and 1973. What is the content of the lume on the hands and on the dial on these 2 particular watches? Was the lume that Bulova used back in 1973 radioactive? What was the exact name of the lume that they used on these 2 watches? And for how many years is the lume good for in being able to see the time in the dark?
    I've attached 2 links below with some close-up pictures of each watch.
    Please check out the pictures and tell give me any information that you might know about the lume on these 2 bulova watches. I would like to hear your input on this subject.
    THANKS

    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250643372839&ssPageNam e=STRK:MEWAX:IT

    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250643371847&ssPageNam e=STRK:MEWAX:IT
    Last edited by dimitribouras; June 3rd, 2010 at 07:49.

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    Re: Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watche

    If they were using tritium, the dial would be marked with the little "T"s around the six o'clock area. (Promethium - Pm). If there is no markings, it is probably zinc-sulfide phosphorescent paint.

    Radium was not used that late.

    Whatever luminous compound used back then, it probably won't glow to well today, it's nearly 40 years old. (unless someone has had it relumed.)
    familiaritas parit contemptum; raritate admiratione wins.- Lucius Apuleius
    est necessry, accurate ad secundo? - Lysander magna
    iustum est horologium - Obscurus Genius

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    Re: Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watche

    From looking at the pcitures, do you think that the lume on the hands and on the dial on both watches have changed color to a yellow color over the years because both watches are 37 years old? Is this normal? Does the lume material on the hands and dial of a watch change color when the watch becomes old? How badly do you think that the lume has discolored itself on both watches from looking at the pictures?

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    Re: Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watche

    Quote Originally Posted by lysanderxiii View Post
    If they were using tritium, the dial would be marked with the little "T"s around the six o'clock area. (Promethium - Pm). If there is no markings, it is probably zinc-sulfide phosphorescent paint.

    Radium was not used that late.

    Whatever luminous compound used back then, it probably won't glow to well today, it's nearly 40 years old. (unless someone has had it relumed.)

    The link shows a "close-up" picture of the same exact model Bulova automatic watch that I just purchased.
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160439202377&ssPageNam e=STRK:MEWAX:IT

    If you look closely at the close-up pictures of face of the watch, you will clearly see that there are two "T" "T"'s located at the six o'clock position on the watch dial. Does this mean that the lume that's both on the hands and on the dial are Tritium? The watch in the pictures dates back to 1972-1973.
    Did Bulova use Tritium on this particular model back in 1972-1973? What do you think?

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    Member lysanderxiii's Avatar
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    Re: Does anybody in here Know what type of Lume Bulova used in 1972 & 1973 on their watche

    Quote Originally Posted by dimitribouras View Post
    From looking at the pcitures, do you think that the lume on the hands and on the dial on both watches have changed color to a yellow color over the years because both watches are 37 years old? Is this normal? Does the lume material on the hands and dial of a watch change color when the watch becomes old? How badly do you think that the lume has discolored itself on both watches from looking at the pictures?
    Yes, tritium lume changes from a pale yellow to a golden brownish yellow over time. sometimes the dial and hand discolor differently.

    And, yes, "T"s indicate tritium. Tritium was common as a luminous material in the 70s.
    familiaritas parit contemptum; raritate admiratione wins.- Lucius Apuleius
    est necessry, accurate ad secundo? - Lysander magna
    iustum est horologium - Obscurus Genius

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