The Hublot Big Bang Unico Chronograph is one of the brand's most popular and recognizable models, favored for its bold, contemporary design and the visible skeletonized movement. While Hublot watches generally do not appreciate or hold value as strongly as Rolex or AP, the Big Bang Unico is the most desirable line and should find a buyer quickly, particularly if it's a desirable material like titanium or ceramic, and is sold as a full set in excellent condition