I'm currently trying to figure out when Philips changed their Daylight color from 6500k to 5000k. So far the earliest 5000k Daylight lamps were these (1) in @alexd120's gallery.

I would love to know when more specifically they changed though...

(1) https://www.lighting-gallery.net/gallery/displayimage.php?album=search&cat=0&pos=1&pid=222125