What about Lange's relationship with rose gold vs. white gold?...
This is another association that I have to this discussion.
I always perceived Lange's (older) rose gold cases to be "lesser" and their white gold cases to be "greater" when compared with many industry peers. Here is why:
RG: As those who've followed Lange know, the brand never brushed the middle section of its rose gold cases until relatively recently. Their RG cases were always completed polished. This was due to concerns about the rose gold alloy's ability to withstand the same (standard) brushed finishing that Lange used on all of its other cases (YG, WG, PT, HG, SS). I think the specific concern involved tarnishing/discoloration of the brushed finish over time -- that the middle of the rose gold case might eventually look too different from the rest of the case if it were brushed. It always struck me as odd that Lange didn't see this as a problem that needed to be solved before any products could be released. I would have expected Lange to say, "We will not produce any RG watches unless we can apply the same type of finishing that we use on all of our other gold alloy cases." To me, polishing the middle of the RG cases represented a sort of capitulation -- like giving up or taking the easy way out. Thus, rightly or wrongly, I always thought of Lange's older rose gold cases as being "lesser" because I knew the center section of those cases "should" have been brushed.
WG: Until other brands started doing this relatively recently, Lange was one of very few manufacturers to use a (superior and more costly) white gold alloy that does not require rhodium plating. If I remember correctly, that's because Lange's WG alloy has a high palladium content. In contrast, near all other high-end manufacturers plated their WG cases. The idea of a "gold-plated" high-end watch was always offputting to me, and the fact that Lange took the extra effort and expense to ensure that they did not need to plate their WG cases (and buckles, etc.) caused me to view Lange's WG cases as "greater."
[Another association is to platinum watches. Is it truly physically impossible to make the hands, crown, applied markers, and/or date window out of PT rather than WG? Or would it just be prohibitively costly and time-consuming to do that? And why do we care or not care about that?]