When did HP retire their two-shot molded keys?

[rprosperi]

Thanks for the link Gerson, it turns out it's on a page that I do have bookmarked, though no need of course... (you see, OCD after all).

The only real example of "re-used" key tops I ever saw in-person was at a PPC meeting in the 80's where it was concluded the final key label was simply painted on an older key that had been re-purposed. The idea of worn key molds was not discussed, although it seems feasible, but if this was the case I'd assume there would be many more examples floating around waiting to be discovered.