There's a Swan 5B up for auction, and the seller disclosed a problem with the section. It could be replaced with another section, but the dealer wrote: "How often do you see a complete Swan 5B?" That got me thinking, because I just acquired a Waterman 42 that I bought for its exceptional nib. Thing is, I want to stick that nib into a ringtop so I can use it at work. Is this vandalism? How important is it to keep these artifacts intact? One sees many pens with replacement nibs, which suggests that these were functional objects, but it's decades later now and a different set of values takes over. What does anyone think?