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What would have been the original color of an early Speedmaster's lume?

  1. Modest_Proposal Trying too hard to be one of the cool kids Nov 3, 2016

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    1950's-1960's lume. Before it turned into the oh-so-familiar brown? It would be white, I assume?
     
  2. Davidt Nov 4, 2016

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    I think radium lume was a medium yellow when new and tritium was a light yellow.
     
  3. Darlinboy Pratts! Will I B******S!!! Nov 4, 2016

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    Would have been whitish/yellow tint, how light or dark depending on the specific formula used.

    Not relevant to the OP's question, but a decent primer on lume.

    http://kronometric.org/article/lume/#3.5
     
    Modest_Proposal, noelekal and GregH like this.