What interesting synchronicity - I don't see too many sunburst dials (not that I've done a lot of looking) but this morning chose my grandfather's 1958-1961 timeframe Hamilton SeaGlo (Hamilton 671/ETA 1080 Swiss movement). Need to run the serial # but at least 2 yrs later than your "K" so looks like Hamilton might have riffed a bit on Bulova's in-house work!
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