Hmmm....a timeless watch? Sounds like a contradiction in terms.
I once got in a discussion regarding the relative merits of mechanical versus electronic watches. My friend took the position that watches are (or should be) judged on accuracy above all other criteria, and therefore electronic watches are to be preferred. I argued that accuracy was critical in the days of celestial navigation, but that today the accuracy of a good mechanical watch is (or should be) sufficient. We went back and forth on those points, neither of us making a particularly compelling case. Then I recalled something I'd read years ago: I said that the curves and circular movement that characterize the mainspring and gears of a mechanical watch echo - in microcosm - the movement of the earth and the moon, and thus are a truer and more fitting means to tell time. I argued that an electronic watch tells time in jagged increments rather than the continuum in which life is actually lived.
I was feeling pretty good about my position, when my friend countered that while my view is valid in classical physics, life really isn't lived in a continuum. He threw quantum physics at me, asserting that at the atomic and sub-atomic level, life is indeed lived in increments.
This left me in a state of uncertainty from which I have not yet emerged.
However, I still prefer mechanical watches, because...because....well, just because. I think I can still say the same about mechanical M cameras.