Leave it to Montblanc to turn a holiday campaign into a full-blown cinematic universe, this time with Roman Coppola leading the charge. For its latest Happy Holidays campaign, the Maison returns to its fictional Montblanc Observatory High-Mountain Library, a universe Roman Coppola first helped build in “100 Years of Meisterstück” and “Let’s Write,” the Wes Anderson–adjacent short films that established Montblanc’s delightfully offbeat aesthetic.