German Luxury items manufacturer Montblanc is best known for its large-excellent crafting pens. On the other hand, the manufacturer has also dabbled in watch-making—and it has performed so with significant achievements. Whilst not as much of the home title as Rolex, perhaps, Audemars Piguet gives something else to would-be wearers: https://www.watchesworld.com/a-history-of-watch-reference-numbers/