Yes, the hands tend to age toward more of a yellow / gold tone, while the lume on the dial stays whiter. Come to think of it, I'm not sure whether it is "aging" or whether they may have looked about like this when they left the factory.

In terms of the luminous material, I'm not sure about the math, but the hands and dial on this later pair are still glowing strongly . . . as strong as any that I have seen.

Jeff

++++++++++++++++++++

: Nice pairs Jeff!

: Is the lume mix different on the hands than the hour markers? Seems
: to have aged differently on the latter pair.

: The "T - 25 mc" marking is interesting too. Although I'd
: expect Ci instead of C, it looks like a rating in millicuries
: for the tritium. 25 mc would be 925 million becquerels or, more
: handily, 0.925 GBq, which means just under a billion radioactive
: decays per second. Factoring in a half life of 4500 days +/-8,
: that means that they would still be
: producing...errrmmm...uhhh...running out of fingers now....
: lots of decays per second :)

: I don't hold myself accountable for any of that maths by the way,
: it's still before 7 in the morning here!